Merge pull request #138 from ivankravets/patch-9

Add CI build status

README.md

@@ -1,6 +1,8 @@
 Teensy Audio Library
 ====================
 
+[![Build Status](https://travis-ci.org/PaulStoffregen/Audio.svg?branch=master)](https://travis-ci.org/PaulStoffregen/Audio)
+
 16 bit, 44.1 kHz streaming audio library for Teensy 3.x, featuring:
 
 * Polyphonic Playback