Merge pull request #1 from ipwnstuff/master

Add a few files and directories to RubyMotion.gitignore

RubyMotion.gitignore

+.dat*
 .repl_history
-build
+build/
 tags
 
-# common annoyance editors
+# Editor files
 .DS_Store
 nbproject
 .redcar
@@ -10,4 +11,10 @@ nbproject
 *.swo
 ~
 .eprj
+vendor/Pods
+*.nib
 
+# YARD artifacts
+.yardoc
+_yardoc
+doc/