Revert "convert license to RST to restore indirect links (#366)"

This reverts commit a809834.

Author: mr-c

LICENSE.md

@@ -0,0 +1,63 @@
+# Licenses
+
+## Instructional Material
+
+All Common Workflow Language project instructional material and changes
+to the structure are also made available under the [Creative Commons Attribution
+license][cc-by-human]. The following is a human-readable summary of
+(and not a substitute for) the [full legal text of the CC BY 4.0
+license][cc-by-legal].
+
+You are free:
+
+* to **Share**---copy and redistribute the material in any medium or format
+* to **Adapt**---remix, transform, and build upon the material
+
+for any purpose, even commercially.
+
+The licensor cannot revoke these freedoms as long as you follow the
+license terms:
+
+
+
+* **Attribution**---You must give appropriate credit (mentioning that
+  your work is derived from work that is Copyright © the Common Workflow
+  Language project, and, where practical, linking to
+  https://www.commonwl.org/ ), provide a [link to the
+  license][cc-by-human], and indicate if changes were made. You may do
+  so in any reasonable manner, but not in any way that suggests the
+  licensor endorses you or your use.
+
+* **No additional restrictions**---You may not apply legal terms or
+technological measures that legally restrict others from doing
+anything the license permits.  With the understanding that:
+
+  * You do not have to comply with the license for elements of the
+  material in the public domain or where your use is permitted by an
+  applicable exception or limitation.
+  * No warranties are given. The license may not give you all of the
+  permissions necessary for your intended use. For example, other
+  rights such as publicity, privacy, or moral rights may limit how you
+  use the material.
+
+## Software
+
+Except where otherwise noted, the example programs and other software
+provided by Common Workflow Language project are made available under the
+[OSI][osi]-approved
+[Apache 2.0 license][apache-2.0-license].
+
+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.
+
+
+
+
+[cc-by-human]: https://creativecommons.org/licenses/by/4.0/
+[cc-by-legal]: https://creativecommons.org/licenses/by/4.0/legalcode
+[apache-2.0-license]: https://opensource.org/licenses/Apache-2.0
+[mit-license]: https://opensource.org/licenses/mit-license.html
+[osi]: https://opensource.org