README.markdown in git-issue-0.7.4 vs README.markdown in git-issue-0.7.5

@@ -10,14 +10,17 @@
 <img src='https://github.com/yuroyoro/git-issue/raw/master/images/git-issue_screenshot-1.png' width='600'/>
 <img src='https://github.com/yuroyoro/git-issue/raw/master/images/git-issue_screenshot-2.png' width='600'/>
 
 ## Instration
 
+    $ gem install git-issue
+
+    or
+
     $ git clone https://github.com/yuroyoro/git-issue.git
     $ cd git-issue
-    $ rake install jeweler
-    $ rake build
-    $ gem install pkg/git-issue-<version>.gem
+    $ gem install jeweler
+    $ rake install
 
 ## Configuration
 
 set type of issue traking system(redmine or github)