add objc ignore files

.gitignore

@@ -14,3 +14,22 @@ src/phonic/Manifest.txt
 src/phonic/lib/iv/phonic.so
 src/phonic/ext/iv/phonic/third_party
 test/sputnik/sputniktests/
+
+.DS_Store
+i*.swp
+*~.nib
+
+build/*
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+*.xcworkspace
+!default.xcworkspace
+xcuserdata
+profile
+*.moved-aside