Merge pull request #16 from arduino-libraries/add-travis

Add travis build test

Author: FWeinb

.travis.yml

@@ -0,0 +1,10 @@
+language: c
+sudo: false
+before_install:
+  - source <(curl -SLs https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/install.sh)
+script:
+  - build_platform esp8266
+notifications:
+  email:
+    on_success: change
+    on_failure: change