adds the MIT License [closes rails#43]

Author: fxn

MIT-LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2012-ω Xavier Noria
+
+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

@@ -108,3 +108,7 @@ Finally, to completely wipe the virtual machine from the disk **destroying all i
     host $ vagrant destroy # DANGER: all is gone
 
 Please check the [Vagrant documentation](http://docs.vagrantup.com/v2/) for more information on Vagrant.
+
+## License
+
+Released under the MIT License, Copyright (c) 2012–<i>ω</i> Xavier Noria.