begin! add Rails and Obj-C templates

Objective-C.gitignore

@@ -0,0 +1,8 @@
+# xcode
+build/*
+*.pbxuser
+*.mode1v3
+*.perspectivev3
+# osx
+.DS_Store
+profile

README.md

@@ -0,0 +1,3 @@
+# A Collection of Useful .gitignore Templates
+
+Thanks.

Rails.gitignore

@@ -0,0 +1,5 @@
+.bundle
+log/*
+tmp/*
+db/*.sqlite3
+public/system/*