Ignore rubymine directory.

Charlie Savage · Charlie Savage · commit 2f1aa3315923 · 2012-03-18T09:56:00.000-06:00
diff --git a/.gitignore b/.gitignore
@@ -5,4 +5,5 @@ tmp
 /ext/vc/Debug
 
 /ext/libxslt/Makefile
-/ext/libxslt/extconf.h
+/ext/libxslt/extconf.h
+/.idea
