FFOS added to supported platforms
diff --git a/doc/index.md b/doc/index.md
index 79d3b47..d0f5127 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -33,6 +33,7 @@
 - Amazon Fire OS
 - Android
 - BlackBerry 10
+- Firefox OS
 - iOS
 - Tizen
 - Windows Phone 7 and 8