Fixed method call to remove better_form.js

uninstall.rb

@@ -2,7 +2,7 @@
 path = "public/javascripts/better_form.js"
 puts "Removing #{path}"
 begin
-	File.remove(path)
+	File.delete(path)
 rescue Exception => e
 	puts "Unable to remove #{path}"
 	puts e