Add build status and license indicator to README.md.

Author: leftclickben

README.md

@@ -1,5 +1,8 @@
 # Serverless API Stage plugin
 
+[![Build Status](https://travis-ci.org/leftclickben/serverless-api-stage.svg?branch=master)](https://travis-ci.org/leftclickben/serverless-api-stage)
+[![License: MIT](https://camo.githubusercontent.com/d59450139b6d354f15a2252a47b457bb2cc43828/68747470733a2f2f696d672e736869656c64732e696f2f6e706d2f6c2f7365727665726c6573732e737667)](https://github.com/leftclickben/serverless-api-stage#serverless-api-stage-plugin)
+
 Plugin for the [serverless framework](https://github.com/serverless/serverless) that allows the use of stages with 
 defined stage variables and logging configuration, when using the AWS provider.