Merge pull request #111 from marswj/master

统一文档和代码中RunMode

@@ -97,11 +97,11 @@ It generates folders and files for your project, directory structure as follows:
 
 Beego uses development mode as default, you can use following code to change mode in your application:
 
-	beego.RunMode = "pro"
+	beego.RunMode = "prod"
 
 Or use configuration file in `conf/app.conf`, and input following content:
 
-	runmode = pro
+	runmode = prod
 
 No differences between two ways.
 

@@ -101,11 +101,11 @@
 
 我们可以通过如下的方式改变我们的模式：
 
-	beego.RunMode = "pro"
+	beego.RunMode = "prod"
 
 或者我们在conf/app.conf下面设置如下：
 
-	runmode = pro
+	runmode = prod
 
 以上两种效果一样。