Update README.md.

Author: ljunb

README.md

@@ -8,9 +8,9 @@ A countdown component for react-native APPs. You should use this component to re
 
 ## Supported version
 React Native version(s)            | Supporting CodePush version(s)
-----------------  | -----------
->= 0.48.0    | v0.3.0 (NetInfo change -> connectionChange for eventListener)
-< 0.48.0    | v0.2.1
+----------------                   | -----------
+>= 0.48.0                          | v0.3.0 (NetInfo change -> connectionChange for eventListener)
+< 0.48.0                           | v0.2.1
 
 ## Preview
 ![demo](https://github.com/ljunb/screenshots/blob/master/rn-countdown.gif)