readme updated

Signed-off-by: Vishal Rana <vr@labstack.com>

color/README.md

@@ -4,6 +4,10 @@ Style terminal text.
 ### Installation
 ```go get github.com/labstack/gommon/color```
 
+### Windows?
+- Try [cmder](http://bliker.github.io/cmder)
+- https://github.com/mattn/go-colorable
+
 ### Usage
 [labstack/gommon/color](https://github.com/labstack/gommon/blob/master/color/color_test.go)