Modify the README about how to disable CompileOnSave

Author: remaerd

README.md

@@ -69,7 +69,7 @@ Just hover
 ![you definitely get the point](https://raw.githubusercontent.com/TypeStrong/atom-typescript/master/docs/screens/hover.png)
 
 ## Compile on save
-TypeScript files will be compiled on save. Different notifications are given if `emit` was successful or not. [Configuration driven by `tsconfig.json`](https://github.com/TypeStrong/atom-typescript/blob/master/docs/tsconfig.md)
+TypeScript files will be compiled on save automattically. Different notifications are given if `emit` was successful or not. If you need to disable this feature. add `"compileOnSave": false` in your `tsconfig.json`.
 
 ![](https://raw.githubusercontent.com/TypeStrong/atom-typescript/master/docs/screens/compile%20success.png)