Readme update for cygwin support

Bruno Sutic · Bruno Sutic · commit 110cec7e32d2 · 2015-10-08T16:51:17.000+02:00
diff --git a/README.md b/README.md
@@ -8,6 +8,8 @@ This plugin hopefully makes them more available and "more standard".
 Thanks to the Tmux community for "inventing" these bindings. I've merely just
 copied them here.
 
+Tested and working on Linux, OSX and Cygwin.
+
 ### Bindings
 
 Notice most of the bindings emulate vim cursor movements.
