Remove unnecessary npm install in readme

`hexo init blog` already performs `npm install`.
hexojs · May 10, 2016 · c554fba · c554fba
1 parent 569856e
commit c554fba
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -24,7 +24,6 @@ $ npm install hexo-cli -g
 ``` bash
 $ hexo init blog
 $ cd blog
-$ npm install
 ```
 
 **Start the server**