replace CLA with DCO for contributions

Signed-off-by: Ryan Graham <[email protected]>

Author: rmg

CONTRIBUTING.md

@@ -14,137 +14,71 @@ Contributing to `foreman` is easy. In a few simple steps:
   * Adhere to code style outlined in the [Google C++ Style Guide][] and
     [Google Javascript Style Guide][].
 
-  * Sign the [Contributor License Agreement](https://cla.strongloop.com/agreements/strongloop/node-foreman)
+  * Sign-off your commits to agree to the [Developer Certificate of Origin (DCO)](https://developercertificate.org/)
 
   * Submit a pull request through Github.
 
 
-### Contributor License Agreement ###
+### Sign Your Commits ###
+
+A `Signed-off-by` line added to your commits indicates that you are
+adhering to the DCO:
+
+```
+This is my commit message
+
+Signed-off-by: Random J Developer <[email protected]>
+```
+
+You can have `git` automatically add this line to your commits for you
+with the `-s` flag:
+
+```
+$ git commit -s -m 'This is my commit message'
+```
+
+#### Developer Certificate of Origin ####
+
+This text is also available at https://developercertificate.org/
 
 ```
-  Individual Contributor License Agreement
-
-  By signing this Individual Contributor License Agreement
-  ("Agreement"), and making a Contribution (as defined below) to
-  StrongLoop, Inc. ("StrongLoop"), You (as defined below) accept and
-  agree to the following terms and conditions for Your present and
-  future Contributions submitted to StrongLoop. Except for the license
-  granted in this Agreement to StrongLoop and recipients of software
-  distributed by StrongLoop, You reserve all right, title, and interest
-  in and to Your Contributions.
-
-  1. Definitions
-
-     "You" or "Your" shall mean the copyright owner or the individual
-     authorized by the copyright owner that is entering into this
-     Agreement with StrongLoop.
-
-     "Contribution" shall mean any original work of authorship,
-     including any modifications or additions to an existing work, that
-     is intentionally submitted by You to StrongLoop for inclusion in,
-     or documentation of, any of the products owned or managed by
-     StrongLoop ("Work"). For purposes of this definition, "submitted"
-     means any form of electronic, verbal, or written communication
-     sent to StrongLoop or its representatives, including but not
-     limited to communication or electronic mailing lists, source code
-     control systems, and issue tracking systems that are managed by,
-     or on behalf of, StrongLoop for the purpose of discussing and
-     improving the Work, but excluding communication that is
-     conspicuously marked or otherwise designated in writing by You as
-     "Not a Contribution."
-
-  2. You Grant a Copyright License to StrongLoop
-
-     Subject to the terms and conditions of this Agreement, You hereby
-     grant to StrongLoop and recipients of software distributed by
-     StrongLoop, a perpetual, worldwide, non-exclusive, no-charge,
-     royalty-free, irrevocable copyright license to reproduce, prepare
-     derivative works of, publicly display, publicly perform,
-     sublicense, and distribute Your Contributions and such derivative
-     works under any license and without any restrictions.
-
-  3. You Grant a Patent License to StrongLoop
-
-     Subject to the terms and conditions of this Agreement, You hereby
-     grant to StrongLoop and to recipients of software distributed by
-     StrongLoop a perpetual, worldwide, non-exclusive, no-charge,
-     royalty-free, irrevocable (except as stated in this Section)
-     patent license to make, have made, use, offer to sell, sell,
-     import, and otherwise transfer the Work under any license and
-     without any restrictions. The patent license You grant to
-     StrongLoop under this Section applies only to those patent claims
-     licensable by You that are necessarily infringed by Your
-     Contributions(s) alone or by combination of Your Contributions(s)
-     with the Work to which such Contribution(s) was submitted. If any
-     entity institutes a patent litigation against You or any other
-     entity (including a cross-claim or counterclaim in a lawsuit)
-     alleging that Your Contribution, or the Work to which You have
-     contributed, constitutes direct or contributory patent
-     infringement, any patent licenses granted to that entity under
-     this Agreement for that Contribution or Work shall terminate as
-     of the date such litigation is filed.
-
-  4. You Have the Right to Grant Licenses to StrongLoop
-
-     You represent that You are legally entitled to grant the licenses
-     in this Agreement.
-
-     If Your employer(s) has rights to intellectual property that You
-     create, You represent that You have received permission to make
-     the Contributions on behalf of that employer, that Your employer
-     has waived such rights for Your Contributions, or that Your
-     employer has executed a separate Corporate Contributor License
-     Agreement with StrongLoop.
-
-  5. The Contributions Are Your Original Work
-
-     You represent that each of Your Contributions are Your original
-     works of authorship (see Section 8 (Submissions on Behalf of
-     Others) for submission on behalf of others). You represent that to
-     Your knowledge, no other person claims, or has the right to claim,
-     any right in any intellectual property right related to Your
-     Contributions.
-
-     You also represent that You are not legally obligated, whether by
-     entering into an agreement or otherwise, in any way that conflicts
-     with the terms of this Agreement.
-
-     You represent that Your Contribution submissions include complete
-     details of any third-party license or other restriction (including,
-     but not limited to, related patents and trademarks) of which You
-     are personally aware and which are associated with any part of
-     Your Contributions.
-
-  6. You Don't Have an Obligation to Provide Support for Your Contributions
-
-     You are not expected to provide support for Your Contributions,
-     except to the extent You desire to provide support. You may provide
-     support for free, for a fee, or not at all.
-
-  6. No Warranties or Conditions
-
-     StrongLoop acknowledges that unless required by applicable law or
-     agreed to in writing, You provide Your Contributions on an "AS IS"
-     BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER
-     EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES
-     OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY, OR
-     FITNESS FOR A PARTICULAR PURPOSE.
-
-  7. Submission on Behalf of Others
-
-     If You wish to submit work that is not Your original creation, You
-     may submit it to StrongLoop separately from any Contribution,
-     identifying the complete details of its source and of any license
-     or other restriction (including, but not limited to, related
-     patents, trademarks, and license agreements) of which You are
-     personally aware, and conspicuously marking the work as
-     "Submitted on Behalf of a Third-Party: [named here]".
-
-  8. Agree to Notify of Change of Circumstances
-
-     You agree to notify StrongLoop of any facts or circumstances of
-     which You become aware that would make these representations
-     inaccurate in any respect. Email us at [email protected].
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
 ```
 
 [Google C++ Style Guide]: https://google.github.io/styleguide/cppguide.html