Update .gitignore to include xcworkspaces
Update .gitignore to include xcworkspaces

Metaswitch/CLTokenInputView,quver/CLTokenInputView,leleks/CLTokenInputView,jsooriah/CLTokenInputView,mondough/CLTokenInputView,clusterinc/CLTokenInputView,colemancda/CLTokenInputView,nguyentrai2011/CLTokenInputView