Merge pull request #127 from mazgi/pullreq/update_gitignore_for_workspace

Update .gitignore for Xcode workspace.

.gitignore

@@ -4,3 +4,4 @@ build
 *.xcodeproj/*.perspectivev3
 *.xcodeproj/xcuserdata
 fmdb.xcodeproj/*.mode1v3
+*.xcodeproj/project.xcworkspace/xcuserdata/