Add license to readme

README.md

@@ -46,6 +46,7 @@
     - [Observer and Offset Observer Interaction](#observer-and-offset-observer-interaction)
     - [Resumption](#resumption)
 - [Contributing](#contributing)
+- [License](#license)
 
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@@ -763,3 +764,30 @@ Before making a contribution, please let us know by posting a comment to the
 relevant issue. If you would like to propose a new feature, create a new issue 
 first explaining the feature you’d like to contribute or bug you want to fix.
 
+----
+
+## License
+
+MIT License
+
+Copyright (c) 2016 Bill de hÓra
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+