Let's simplify this testing situation a bit.

.travis.yml

@@ -1,29 +1,28 @@
 language: ruby
 
-os: 
+os:
   - osx
   - linux
-      
+
 rvm:
-  - "2.0.0"
   - "2.2.2"
-  
+
 before_install:
   - if [ "$TRAVIS_OS_NAME" == "osx" ]; then rvm install 2.1 && rvm use 2.1 && ruby -v; fi
   - if [ "$TRAVIS_OS_NAME" == "linux" ]; then sudo apt-get install --assume-yes --quiet gcc-multilib; fi
-  
+
 install:
   - bundle install
   - gem install rspec
   - gem install rubocop
-  
+
 script:
   - cd test && rake ci
   - cd ..
   - cd examples && cd make_example
-  - make clean 
-  - make setup 
+  - make clean
+  - make setup
   - make test
   - cd ..
-  - cd temp_sensor 
+  - cd temp_sensor
   - rake ci