Revert "ignoring pbxproj"

This reverts commit 7c6081e8fe30b5310cd2ef879d0b157da2f7c29f.
Revert "Revert "ignoring pbxproj""

This reverts commit e531c43c5b060cf4bc21c4a8d2ee29c295d8cf31.
Revert "Revert "Revert "ignoring pbxproj"""

This reverts commit aff72b43c07cd40815e4a886ebc0ecea3faff6ac.