Update README.md

Author: wuseal

README.md

@@ -1,10 +1,13 @@
 # JsonToKotlinClass
 A plugin for Kotlin generate Kotlin data class code from a json string
 
-Press ALT + Key And Then you will know how to use
+### How to use
+* Search 'JsonToKotlin' in Interllij Plugin Repositroy Or AndroidStudio Repository And Install it.
+* Retart your Develop tools 
+* Press ALT + Key And Then you will know how to use
 
 ![alt text](https://plugins.jetbrains.com/files/9960/screenshot_17276.png)
 
 
-###Detail Document
+### Detail Document
 http://blog.csdn.net/wuseal/article/details/77508585