Add MIT license

Added licence file and added to composer.json and README.

Fixes #2

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Oliver Davies
+
+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.

README.md

@@ -42,3 +42,9 @@ Quit the server with CONTROL-C.
 
 [1]: https://sculpin.io
 [2]: https://getcomposer.org/doc/06-config.md#process-timeout
+
+## License
+
+[MIT][0]
+
+[0]: https://github.com/opdavies/sculpin-skeleton/blob/master/LICENSE

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "opdavies/sculpin-skeleton",
     "description": "A skeleton Sculpin site.",
-    "licence": "MIT",
+    "license": "MIT",
     "authors": [
         {
             "name": "Oliver Davies",