Update README.md

travis-org to travis-com

Author: soranoba

README.md

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 bbmustache
 ===========
-[![Build Status](https://travis-ci.org/soranoba/bbmustache.svg?branch=master)](https://travis-ci.org/soranoba/bbmustache)
+[![Build Status](https://travis-ci.com/soranoba/bbmustache.svg?branch=master)](https://travis-ci.com/soranoba/bbmustache)
 [![hex.pm version](https://img.shields.io/hexpm/v/bbmustache.svg)](https://hex.pm/packages/bbmustache)
 
 Binary pattern match Based Mustache template engine for Erlang/OTP.