Add a build badge from Travis

README.md

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 # sqlmlutils
 
+[![Build Status](https://travis-ci.com/Microsoft/sqlmlutils.svg?branch=master)](https://travis-ci.com/Microsoft/sqlmlutils)
+
 sqlmlutils is a package designed to help users interact with SQL Server and execute R or Python code from an R/Python client. 
 
+
 # Installation
 
 To install sqlmlutils from this repository, run the following commands from the root folder: