Adding Travis & AppVeyor badges

Author: sanathkr

README.md

@@ -1,5 +1,8 @@
 ## Lambda Builders
 
+[![AppVeyor Status](https://ci.appveyor.com/api/projects/status/txv6gk69614727nu?svg=true)](https://ci.appveyor.com/project/sanathkr/aws-lambda-builders-3bxwl)
+[![Travis Status](https://travis-ci.org/awslabs/aws-lambda-builders.svg?branch=develop)](https://travis-ci.org/awslabs/aws-lambda-builders)
+
 Lambda Builders is a Python library to compile, build and package AWS Lambda functions for several runtimes & 
 frameworks.