CI Fixes due to unit tests (#222)

Author: shazron

.travis.yml

@@ -1,10 +1,17 @@
-language: node_js
+os: osx
+osx_image: xcode8.3
 sudo: false
+env:
+  matrix:
+  - TRAVIS_NODE_VERSION: '4'
+  - TRAVIS_NODE_VERSION: '6'
 git:
   depth: 10
-node_js:
-- '4'
-- '6'
+before_install:
+- rm -rf ~/.nvm && git clone https://github.com/creationix/nvm.git ~/.nvm && (cd ~/.nvm
+  && git checkout `git describe --abbrev=0 --tags`) && source ~/.nvm/nvm.sh && nvm
+  install $TRAVIS_NODE_VERSION
+- node --version  
 install:
 - npm install
 script:

spec/commands.spec.js

@@ -17,22 +17,29 @@
     under the License.
 */
 var commands = require('../src/commands');
+var os = require('os');
 
 describe('commands end-to-end', function() {
 
     beforeEach(function() {
-      commands.init();
+      if (os.platform() === 'darwin') {
+        commands.init();
+      }
     });
 
     afterEach(function() {
     });
 
     it('command - showsdks', function() {
-      commands.showsdks({ 'no-output': true });
+      if (os.platform() === 'darwin') {
+        commands.showsdks({ 'no-output': true });
+      }
     });
 
     it('command - showdevicetypes', function() {
-      commands.showdevicetypes({ 'no-output': true });;
+      if (os.platform() === 'darwin') {
+        commands.showdevicetypes({ 'no-output': true });
+      }
     });
 
     it('command - launch', function() {
@@ -47,6 +54,8 @@ describe('commands end-to-end', function() {
 
     it('command - start', function() {
       var devicetypeid = 'iPhone-6';
-      commands.start({ 'devicetypeid': devicetypeid });
+      if (os.platform() === 'darwin') {
+        commands.start({ 'devicetypeid': devicetypeid });
+      }
     });
 });