ENH: Add WikiExamples as a remote module

Enable the ITK Wiki Examples as a Remote Module. This patch refers to
an ITK Wiki Example revision that adds full support as an ITK Remote
Module. This will make it easier for developers to enable the
examples.

Change-Id: I67e6208e492062fe7edcb7e8890504e2586419f3
Merge topic 'RemoteModule_WikiExamples'

12917f66 ENH: Add WikiExamples as a remote module