Add PlatformIO to Travis CI (me-no-dev#123)

* Add PlatformIO to Travis CI

* Update .travis.yml

Author: me-no-dev

.travis.yml

@@ -1,5 +1,5 @@
 sudo: false
-language: bash
+language: python
 os:
   - linux
 
@@ -12,11 +12,16 @@ stages:
 jobs:
   include:
 
-    - name: "Build Examples"
+    - name: "Arduino Build"
       if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
       stage: build
       script: bash $TRAVIS_BUILD_DIR/travis/build.sh
 
+    - name: "PlatformIO Build"
+      if: tag IS blank AND (type = pull_request OR (type = push AND branch = master))
+      stage: build
+      script: bash $TRAVIS_BUILD_DIR/travis/build-pio.sh
+
 notifications:
   email:
     on_success: change

travis/build-pio.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+echo -e "travis_fold:start:install_pio"
+pip install -U platformio
+echo -e "travis_fold:end:install_pio"
+
+echo -e "travis_fold:start:test_pio"
+for EXAMPLE in $PWD/examples/*/*.ino; do
+    platformio ci $EXAMPLE -l '.' -b esp12e
+done
+echo -e "travis_fold:end:test_pio"