standardization of sub modules

readme.md

@@ -1,3 +1,7 @@
+[![Build Status](https://travis-ci.org/lesspass/webextension.svg?branch=master)](https://travis-ci.org/lesspass/webextension)
+
 # LessPass Web Extension
 
 chrome and firefox web extension for lesspass password manager
+
+[lesspass submodule](https://github.com/lesspass/lesspass)