updated travis file

.travis.yml

@@ -1,7 +1,16 @@
 ---
 language: node_js
 node_js:
-  - "0.12"
+  - "4.2"
+
+env:
+- CXX=g++-4.8
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8
 
 sudo: false
 
@@ -10,14 +19,15 @@ cache:
     - node_modules
 
 before_install:
-  - export PATH=/usr/local/phantomjs-2.0.0/bin:$PATH
-  - "npm config set spin false"
-  - "npm install -g npm@^2"
+  - npm config set spin false
+  - npm install -g bower
+  - bower --version
+  - npm install phantomjs-prebuilt
+  - phantomjs --version
 
 install:
-  - npm install -g bower
-  - npm install
   - bower install
+  - npm install
 
 script:
   - npm test