DM: update readme and add travis

.travis.yml

@@ -0,0 +1,29 @@
+language: c
+sudo: false
+cache:
+  directories:
+    - ~/arduino_ide
+    - ~/.arduino15/packages/
+git:
+  depth: false
+  quiet: true
+env:
+  global:
+     - ARDUINO_IDE_VERSION="1.8.5"
+     - PRETTYNAME="Adafruit BME280 Arduino Library"
+# Optional, will default to "$TRAVIS_BUILD_DIR/Doxyfile"
+#    - DOXYFILE: $TRAVIS_BUILD_DIR/Doxyfile
+
+before_install:
+   - source <(curl -SLs https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/install.sh)
+
+install:
+   - arduino --install-library "Adafruit ILI9341","Adafruit GFX Library"
+
+script:
+   - build_main_platforms
+
+# Generate and deploy documentation
+after_success:
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/library_check.sh)
+  - source <(curl -SLs  https://raw.githubusercontent.com/adafruit/travis-ci-arduino/master/doxy_gen_and_deploy.sh)

README.md

@@ -1,3 +1,7 @@
+# Adafruit BME280 Library [![Build Status](https://travis-ci.org/adafruit/Adafruit_BME280_Library.svg?branch=master)](https://travis-ci.org/adafruit/Adafruit_BME280_Library)
+
+<img src="https://cdn-shop.adafruit.com/970x728/2652-00.jpg" height="300"/>
+
 This is a library for the Adafruit BME280 Humidity, Barometric Pressure + Temp sensor
 
 Designed specifically to work with the Adafruit BME280 Breakout