fixup readme

Author: brentru

README.rst

@@ -9,6 +9,11 @@ Introduction
     :target: https://discord.gg/nBQh6qu
     :alt: Discord
 
+.. image:: https://travis-ci.org/adafruit/Adafruit_CircuitPython_AMG88xx.svg?branch=master
+    :target: https://travis-ci.org/adafruit/Adafruit_CircuitPython_AMG88xx
+    :alt: Build Status
+
+
 Adafruit CircuitPython module for the AMG88xx GRID-Eye IR 8x8 thermal camera.
 
 Dependencies