Add a heard through mention.

jbranchaud · jbranchaud · commit 1b4941fdf23c · 2016-01-05T21:45:00.000-06:00
diff --git a/javascript/enable-es7-transforms-with-react-rails.md b/javascript/enable-es7-transforms-with-react-rails.md
@@ -12,3 +12,5 @@ config.react.jsx_transform_options = {
   optional: ["es7.classProperties"]
 }
 ```
+
+h/t Mike Chau

Original file line number	Diff line number	Diff line change
`@@ -12,3 +12,5 @@ config.react.jsx_transform_options = {`
`12`	`12`	`optional: ["es7.classProperties"]`
`13`	`13`	`}`
`14`	`14`	```
	`15`	`+`
	`16`	`+h/t Mike Chau`