Add CONTRIBUTING.md (#65)

* Add CONTRIBUTING.md

Signed-off-by: AarshiyaGuneja <[email protected]>

Author: AarshiyaGuneja

CONTRIBUTING.md

@@ -0,0 +1,109 @@
+# How to Contribute to Jaeger
+
+We'd love your help!
+
+Jaeger is [Apache 2.0 licensed](LICENSE) and accepts contributions via GitHub
+pull requests. This document outlines some of the conventions on development
+workflow, commit message formatting, contact points and other resources to make
+it easier to get your contribution accepted.
+
+We gratefully welcome improvements to documentation as well as to code.
+
+## Making A Change
+
+*Before making any significant changes, please [open an issue](https://github.com/jaegertracing/cpp-client/issues).*
+Discussing your proposed changes ahead of time will make the contribution process smooth for everyone.
+
+Once we've discussed your changes and you've got your code ready, make sure
+that tests are passing and open your pull request. Your pull request is most likely to be accepted if it:
+
+* Includes tests for new functionality.
+* Follows the code style guidelines.
+* Has a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+* Each commit is signed by the author ([see below](#sign-your-work)).
+
+## License and Certificate of Origin
+
+By contributing to this project you agree to license your contribution under the terms
+of the [Apache License](LICENSE), and you agree to the [Developer Certificate of
+Origin](https://developercertificate.org/) (DCO). This document was created
+by the Linux Kernel community and is a simple statement that you, as a
+contributor, have the legal right to make the contribution. See the [DCO](DCO)
+file for details.
+
+/*
+ * Copyright (c) 2018, The Jaeger Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+```
+
+## Sign your work
+
+The sign-off is a simple line at the end of the explanation for the
+patch, which certifies that you wrote it or otherwise have the right to
+pass it on as an open-source patch.  The rules are pretty simple: if you
+can certify the below (from
+[developercertificate.org](http://developercertificate.org/)):
+
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+660 York Street, Suite 102,
+San Francisco, CA 94110 USA
+
+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.
+```
+
+then you just add a line to every git commit message:
+
+    Signed-off-by: Joe Smith <[email protected]>
+
+using your real name (sorry, no pseudonyms or anonymous contributions.)
+
+You can add the sign off when creating the git commit via `git commit -s`.
+
+If you want this to be automatic you can set up some aliases:
+
+```
+git config --add alias.amend "commit -s --amend"
+git config --add alias.c "commit -s"
+```

README.md

@@ -3,6 +3,10 @@
 # cpp-client
 C++ OpenTracing binding for Jaeger
 
+## Contributing 
+
+Please see [CONTRIBUTING.md](CONTRIBUTING.md).
+
 ## Generated files
 
 This project uses Apache Thrift for wire-format protocol support code
@@ -21,9 +25,14 @@ The code can be re-generated with
 but at time of writing (Thrift 0.11.0) the resulting code is invalid due to
 https://issues.apache.org/jira/browse/THRIFT-4484
 
+## License
+  
+[Apache 2.0 License](./LICENSE).
+
 [ci-img]: https://travis-ci.org/jaegertracing/cpp-client.svg?branch=master
 [ci]: https://travis-ci.org/jaegertracing/cpp-client
 [cov-img]: https://codecov.io/gh/jaegertracing/cpp-client/branch/master/graph/badge.svg
 [cov]: https://codecov.io/gh/jaegertracing/cpp-client
 [ot-img]: https://img.shields.io/badge/OpenTracing--1.0-enabled-blue.svg
 [ot-url]: http://opentracing.io
+