Merge pull request #6 from amilajack/patch-1

Added travis ci support for stable node versions

.travis.yml

@@ -1,5 +1,30 @@
 language: node_js
 node_js:
   - 6.1.0
+  - 5
+  - 4
 addons:
   sauce_connect: true
+
+cache:
+  directories:
+    - node_modules
+
+install:
+  - npm install
+
+script:
+  - npm run test
+  - npm run build
+
+# Necessary to compile native modules for io.js v3 or Node.js v4
+env:
+  - CXX=g++-4.8
+
+# Necessary to compile native modules for io.js v3 or Node.js v4
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8