add .travis.yml file

.travis.yml

@@ -0,0 +1,36 @@
+sudo: false
+
+env:
+  - CXX=g++-4.8
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8
+
+language: node_js
+
+node_js:
+  - "0.8"
+  - "0.10"
+  - "0.12"
+  - "1"
+  - "2"
+  - "3.2"
+  - "4"
+  - "5"
+
+install:
+  - PATH="`npm bin`:`npm bin -g`:$PATH"
+  # Node 0.8 comes with a too obsolete npm
+  - if [[ "`node --version`" =~ ^v0\.8\. ]]; then npm install -g [email protected] ; fi
+  # Install dependencies and build
+  - npm install
+
+script:
+  # Output useful info for debugging
+  - node --version
+  - npm --version
+  # Run tests
+  - npm test