💚 travis: Added CXX env flag, g++-4.8 package to compile kerberos correctly

Author: rueckstiess

.travis.yml

@@ -1,6 +1,18 @@
 language: node_js
 node_js:
   - '4.2.1'
+# Need to add CXX env flag and g++-4.8 (in ubuntu-toolchain-r-test source)
+# @see https://github.com/travis-ci/travis-ci/issues/4771
+# @see https://github.com/redis/hiredis-node/blob/master/.travis.yml
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - libgnome-keyring-dev
+      - g++-4.8
+env:
+  - CXX=g++-4.8
 before_install:
   - npm install -g npm@3
   - npm config set loglevel error