add travis CI

Author: jdneo

.travis.yml

@@ -0,0 +1,19 @@
+language: node_js
+
+node_js:
+  - 'stable'
+
+before_install:
+  - if [ $TRAVIS_OS_NAME == "linux" ]; then
+      export CXX="g++-4.9" CC="gcc-4.9" DISPLAY=:99.0;
+      sh -e /etc/init.d/xvfb start;
+      sleep 3;
+    fi
+
+install:
+  - npm install -g vsce
+  - npm install
+
+script:
+  - npm run lint
+  - vsce package