[docs] update supported React Native platforms table (#917)

Author: sergey-akhalkov

README.md

@@ -61,7 +61,8 @@ We try our best to maintain backwards compatability of our plugin with previous
 | v0.40-v0.42             | v1.17 *(RN refactored iOS header files)*             |
 | v0.43-v0.44             | v2.0+ *(RN refactored uimanager dependencies)*       |
 | v0.45                   | v3.0+ *(RN refactored instance manager code)*        |
-| v0.46+                  | TBD :) We work hard to respond to new RN releases, but they do occasionally break us. We will update this chart with each RN release, so that users can check to see what our "official" support is.
+| v0.46                   | v4.0+ *(RN refactored js bundle loader code)*        |
+| v0.47+                  | TBD :) We work hard to respond to new RN releases, but they do occasionally break us. We will update this chart with each RN release, so that users can check to see what our "official" support is.
 
 ### Supported Components