docs: update README.md

sorrycc · sorrycc · commit 0623784d59b0 · 2016-10-26T10:49:47.000+08:00
diff --git a/README.md b/README.md
@@ -27,7 +27,7 @@ $ dva new myApp
 $ cd myApp
 ```
 
-### dva generate
+### dva generate (short-cut alias: "g")
 
 ```bash
 $ dva g route product-list
