Improve xcuserstate ignore
Update xcodeproj to Xcode 5 file format
Update to recommended project settings in Xcode 5
remove INSTALL_PATH build setting

As far as I can tell this setting is not needed and it breaks the
"Archive" build action, making it impossible to do a proper release
build of the framework target
Bugfix INSTALL_PATH

turns out I was wrong... it did break it to remove this setting.
Merge remote-tracking branch 'upstream/master'
delete my xcuserdatad
Merge pull request #1 from abhibeckert/master

Housekeeping