Point to ruby 1.8 shim

Using a shim allows us to catch when 1.8 of ruby is not present and provide other options.

#ignore

Commands/Quick Open.tmCommand

@@ -29,7 +29,7 @@ fi
 #
 if [[ `which mdfind` != *"not found" ]]; then
 	# we have Spotlight
-	files=`/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby "$TM_BUNDLE_SUPPORT/SpotlightSearch.rb" "$header"`
+	files=`ruby18 "$TM_BUNDLE_SUPPORT/SpotlightSearch.rb" "$header"`
 else
 	# old method
 	arr=("/usr/include"