README.md - Add Travis-CI badge

README.md

@@ -2,6 +2,7 @@
 [![AppVeyor CI builds](https://img.shields.io/appveyor/ci/chmorgan/sharppcap/master.svg?style=flat-square&label=AppVeyor&logo=appveyor)](https://ci.appveyor.com/project/chmorgan/sharppcap/branch/master)
 [![Build Status](https://dev.azure.com/chmorgan/chmorgan/_apis/build/status/chmorgan.sharppcap?branchName=master)](https://dev.azure.com/chmorgan/chmorgan/_build/latest?definitionId=1&branchName=master)
 [![CircleCI](https://circleci.com/gh/chmorgan/sharppcap.svg?style=svg)](https://circleci.com/gh/chmorgan/sharppcap)
+[![Travis-CI](https://travis-ci.com/chmorgan/sharppcap.svg?branch=master)](https://travis-ci.com/chmorgan/sharppcap)
 
 # sharppcap
 Fully managed, cross platform (Windows, Mac, Linux) .NET library for capturing packets from live and file based devices