Removing download of esriAddIn from GitHub due to + in name; arcgis.com download only.

Due to an issue with ArcGIS Desktop 10.2 and "+" (plus sign) in the name of the add-in, I am removing the addin from GitHub.  It will only be available for download, in the compiled state, from arcgis.com.  Future updates will point to arcgis.com and documentation has been updated.

http://www.arcgis.com/home/item.html?id=a8895908f98d4334b401de9b6d08e847