Added CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,9 @@
+# Contributing to UI Sortable
+
+## Reporting Issues
+
+The following examples are provided as a good starting point to demonstrate issues, proposals and use cases.
+Feel free to edit any of them for your needs (don't forget to also update the libraries used to your version).
+
+* [Simple Demo](http://codepen.io/thgreasi/pen/jlkhr)
+* [Connected Lists](http://codepen.io/thgreasi/pen/uFile)

README.md

@@ -72,7 +72,7 @@ So `ui.item.scope` and the directive's `ng-model`, are equal to the scope before
 
 ## Reporting Issues
 
-The following pen's are provided as a good starting point to demonstrate issues, proposals and use case.
+The following pen's are provided as a good starting point to demonstrate issues, proposals and use cases.
 Feel free to edit any of them for your needs (don't forget to also update the libraries used to your version).
 
 - [Simple Demo](http://codepen.io/thgreasi/pen/jlkhr)