diff --git a/Gemfile b/Gemfile
index bf89039..2ec68f2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,4 @@
+source 'https://rubygems.org'
 group :development do
   gem 'guard'
   gem 'guard-livereload', require: false
@@ -6,4 +7,5 @@ group :development do
   gem 'rb-fsevent'                                                                  
   gem 'ruby_gntp'
   gem 'growl'
+  gem 'libnotify'
 end
\ No newline at end of file
diff --git a/Guardfile b/Guardfile
index 9f83330..bd862b6 100644
--- a/Guardfile
+++ b/Guardfile
@@ -10,6 +10,7 @@ notification :growl
 # Linux用的通知中心
 notification :libnotify
 
+#PHPDoc
 guard :shell do
   watch(%r{htdocs/.+\.(php)}) do
     system 'phpdoc', '-d', './htdocs/lib', '-t', './docs/'