Add travis ci

.eslintignore

@@ -0,0 +1 @@
+*.min.js

.travis.yml

@@ -0,0 +1,13 @@
+language: node_js
+node_js:
+  - 6
+  - 7
+  - stable
+env:
+  - CXX=g++-4.8
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - g++-4.8

README.md

@@ -1,7 +1,9 @@
 HackMD
 ===
 
-[![Join the chat at https://gitter.im/hackmdio/hackmd](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/hackmdio/hackmd?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Join the chat at https://gitter.im/hackmdio/hackmd][gitter-image]][gitter-url]
+[![build status][travis-image]][travis-url]
+
 
 HackMD lets you create realtime collaborative markdown notes on all platforms.  
 Inspired by Hackpad, with more focus on speed and flexibility.  
@@ -48,7 +50,7 @@ Browsers Requirement
 Prerequisite
 ---
 
-- Node.js 4.x or up (test up to 6.7.0)
+- Node.js 6.x or up (test up to 7.5.0)
 - Database (PostgreSQL, MySQL, MariaDB, SQLite, MSSQL) use charset `utf8`
 - npm (and its dependencies, especially [uWebSockets](https://github.com/uWebSockets/uWebSockets#nodejs-developers), [node-gyp](https://github.com/nodejs/node-gyp#installation))
 
@@ -222,3 +224,7 @@ Additionally, now can show other clients' selections.
 See more at [http://operational-transformation.github.io/](http://operational-transformation.github.io/)
 
 **License under MIT.**
+[gitter-image]: https://badges.gitter.im/Join%20Chat.svg
+[gitter-url]: https://gitter.im/hackmdio/hackmd?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
+[travis-image]: https://travis-ci.org/hackmdio/hackmd.svg?branch=master
+[travis-url]: https://travis-ci.org/hackmdio/hackmd

package.json

@@ -5,6 +5,8 @@
   "main": "app.js",
   "license": "MIT",
   "scripts": {
+    "test": "npm run-script lint",
+    "lint": "eslint .",
     "dev": "webpack --config webpack.config.js --progress --colors --watch",
     "build": "webpack --config webpack.production.js --progress --colors",
     "postinstall": "bin/heroku",
@@ -120,7 +122,7 @@
     "xss": "^0.3.3"
   },
   "engines": {
-    "node": ">=4.x"
+    "node": ">=6.x"
   },
   "bugs": "https://github.com/hackmdio/hackmd/issues",
   "keywords": [
@@ -150,6 +152,7 @@
     "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.26.1",
     "ejs-loader": "^0.3.0",
+    "eslint": "^3.15.0",
     "exports-loader": "^0.6.3",
     "expose-loader": "^0.7.1",
     "extract-text-webpack-plugin": "^1.0.1",