fixed typo in Ruby snippets

snippets/ruby.snippets

@@ -121,7 +121,15 @@ snippet mod module .. ClassMethods .. end
 			${2}
 		end
 
+		module InstanceMethods
 
+		end
+
+		def self.included(receiver)
+			receiver.extend         ClassMethods
+			receiver.send :include, InstanceMethods
+		end
+	end
 # attr_reader
 snippet r
 	attr_reader :${1:attr_names}
@@ -188,7 +196,7 @@ snippet file File.read()
 	File.read(${1:"path/to/file"})${2}
 snippet Dir Dir.global() { |file| .. }
 	Dir.glob(${1:"dir/glob/*"}) { |${2:file}| ${3} }
-snippet Dir Dir[''..'']
+snippet Dir Dir[".."]
 	Dir[${1:"glob/**/*.rb"}]${2}
 snippet dir
 	Filename.dirname(__FILE__)