add gitignore file
add gitignore file

albertdang/Viewpoint,Datacom/Viewpoint,getoutreach/Viewpoint,Windermere/Viewpoint,Strauman/Viewpoint,gshutler/Viewpoint,Gerd82/Viewpoint,WinRb/Viewpoint,Tsoondev/Viewpoint,makandra/Viewpoint,bcherrington/Viewpoint