Removed Node 0.x from the Travis CI script and added Node 5, 6, 7, and 8

.travis.yml

@@ -6,40 +6,30 @@ language: node_js
 matrix:
   include:
     # Node
-    - node_js: 0.10
-      env: KARMA=false
-    - node_js: 0.11
-      env: KARMA=false
-    - node_js: 0.12
-      env: KARMA=false
-    - node_js: iojs
-      env: KARMA=false
     - node_js: 4
-      env: KARMA=false
     - node_js: 5
-      env: KARMA=false
+    - node_js: 6
+    - node_js: 7
+    - node_js: 8
 
     # Local Browsers
-    - node_js: 0.12
+    - node_js: 8
       env: KARMA_COVERAGE=true KARMA_SAUCE=false
 
     # Sauce Labs
-    - node_js: 0.12
+    - node_js: 8
       env: KARMA_SAUCE=true KARMA_COVERAGE=false
 
   fast_finish: true
   allow_failures:
-    - node_js: 0.12
+    - node_js: 8
       env: KARMA_SAUCE=true KARMA_COVERAGE=false
 
 before_script:
+  # Setup a virtual display for browser testing
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
-  - npm update -g npm
-branches:
-  only:
-    - master            # only run CI on the master branch
-    - /^PR /            # also build pull requests
+
 after_success:
   - cat coverage/*/lcov.info > coveralls.txt                    # concatenate all code-coverage data into a single file
   - cat coveralls.txt                                           # output the file contents (for debugging)