add libprojectM xcode project

Author: revmischa

.gitignore

@@ -4,7 +4,7 @@ src/libprojectM/config.inp
 src/libprojectM/config.inp.b
 src/libprojectM/config.inp.in
 src/projectM-emscripten/build/presets
-src/libprojectM/libprojectM.xcodeproj
+src/libprojectM/libprojectM.xcodeproj/xcshareddata
 presets/custom
 project.xcworkspace
 *.o