Merge pull request #130 from acv/travis-logo

Add build status to README.md

Author: acv

README.md

@@ -1,5 +1,7 @@
 # WifiDog #
 
+[![Build Status](https://travis-ci.org/wifidog/wifidog-gateway.svg?branch=master)](https://travis-ci.org/wifidog/wifidog-gateway)
+
 The WiFi Guard Dog project is a complete and embeddable captive portal
 solution for wireless community groups or individuals who wish to open a
 free hotspot while still preventing abuse of their Internet connection.