diff --git a/gitignore b/gitignore
index 2726fe6..635cdf1 100644
--- a/gitignore
+++ b/gitignore
@@ -1,5 +1,18 @@
+# OS X
 .DS_Store
 Icon\?
+
+# IntelliJ IDEs
 .idea
 *.iml
+
+# Xcode
+*.pbxuser
+!default.pbxuser
+xcuserdata
+*.xccheckout
+*.moved-aside
+
+# TextMate
 .tm_properties
+