Travis CI changes: Adding coverage for Node.js 7 with PHP 7 and Drupal 8. Removing coverage for Node.js 4 with Drupal 8.

Author: arithmetric

.travis.yml

@@ -13,13 +13,18 @@ addons:
    - g++-4.8
 env:
   - NVM_NODE_VERSION="4" GDT_DRUPAL_CORE="7" GDT_TEST_URL="http://127.0.0.1:8080/misc/drupal.js" CXX=g++-4.8
-  - NVM_NODE_VERSION="4" GDT_DRUPAL_CORE="8" GDT_TEST_URL="http://127.0.0.1:8080/core/misc/drupal.js" CXX=g++-4.8
   - NVM_NODE_VERSION="6" GDT_DRUPAL_CORE="8" GDT_TEST_URL="http://127.0.0.1:8080/core/misc/drupal.js" CXX=g++-4.8
+  - NVM_NODE_VERSION="7" GDT_DRUPAL_CORE="8" GDT_TEST_URL="http://127.0.0.1:8080/core/misc/drupal.js" CXX=g++-4.8
 matrix:
   exclude:
     # Skip Drupal 7 on PHP 7
     - php: 7
       env: NVM_NODE_VERSION="4" GDT_DRUPAL_CORE="7" GDT_TEST_URL="http://127.0.0.1:8080/misc/drupal.js" CXX=g++-4.8
+    # Skip PHP 5.5 and 5.6 with Node.js 7
+    - php: 5.5
+      env: NVM_NODE_VERSION="7" GDT_DRUPAL_CORE="8" GDT_TEST_URL="http://127.0.0.1:8080/core/misc/drupal.js" CXX=g++-4.8
+    - php: 5.6
+      env: NVM_NODE_VERSION="7" GDT_DRUPAL_CORE="8" GDT_TEST_URL="http://127.0.0.1:8080/core/misc/drupal.js" CXX=g++-4.8
 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 $NVM_NODE_VERSION
   - node --version