brower compatibility

Author: rcdexta

README.md

@@ -223,10 +223,18 @@ It is possible to make the entire board editable by setting the `editable` prop
 
 Check out the [editable board story](https://rcdexta.github.io/react-trello/?selectedKind=Editable%20Board&selectedStory=Add%2FDelete%20Cards&full=0&down=0&left=1&panelRight=0) and its corresponding [source code](https://github.com/rcdexta/react-trello/blob/master/stories/EditableBoard.story.js) for more details.
 
+## Compatible Browsers
+
+Tested to work with following browsers using [Browserling[(https://www.browserling.com/):
+
+Chrome 60 or above
+Firefox 52 or above
+Opera 51 or above
+Safari 4.0 or above
+Microsoft Edge 15 or above
+
 ## Feature Wishlist
 
-* Making the board fully editable. Currently, the library supports adding new cards to a lane and deleting existing cards. The ability to add new lanes to the end should be possible
-* Rewrite the drag-n-drop functionality to support moving cards to a specific position within a lane or to a different lane. Ability to re-arrange lanes
 * the prop `onDataChange` is a catch all callback that returns the entire board data when anything changes on the board. Micro-events like when a card is added or re-arranged should be possible too
 
 Check the Milestones for this project to track when the above features will be implemented.