Improving “.gitignore”.

.gitignore

@@ -1,9 +1,18 @@
 # Xcode
-/build/
-/*.xcodeproj/*.mode1v3
-/*.xcodeproj/*.mode2v3
-/*.xcodeproj/*.pbxuser
-/*.xcodeproj/xcuserdata/*
-/*.xcodeproj/*.perspectivev3
-/*.xcodeproj/project.xcworkspace/*
-*~.nib
+build/*
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+*.xcworkspace
+!default.xcworkspace
+xcuserdata
+profile
+*.moved-aside
+
+## Ignore incredibly annoying .DS_Store files
+.DS_Store