Updated the addin file for 2013
Project and solution files for 2013
Whitespace
Added the Purge Unnamed RefPlanes command
Added readme with a link to the projct page
Merge branch '2013'

Conflicts:
	PurgeUnnamedRefPlanes.cs
Purge Unnamed Ref Planes rewrite

Instead of relying on the default name it actually checks the parameter.
Small change in the dialog test
Text teak

Conflicts:
	PurgeUnnamedRefPlanes.cs

Conflicts:
	PurgeUnnamedRefPlanes.cs