feat: add and configure eslint

package.json

@@ -16,6 +16,8 @@
     "reskindex": "reskindex -h header",
     "build": "babel src -d lib --source-maps",
     "start": "babel src -w -d lib --source-maps",
+    "lint": "eslint",
+    "lintall": "eslint src/ test/",
     "clean": "rimraf lib",
     "prepublish": "npm run build && git rev-parse HEAD > git-revision.txt",
     "test": "karma start $KARMAFLAGS --browsers PhantomJS",
@@ -51,8 +53,12 @@
   "devDependencies": {
     "babel": "^5.8.23",
     "babel-core": "^5.8.38",
+    "babel-eslint": "^6.1.0",
     "babel-loader": "^5.4.0",
     "babel-polyfill": "^6.5.0",
+    "eslint": "^2.13.1",
+    "eslint-plugin-flowtype": "^2.3.0",
+    "eslint-plugin-react": "^5.2.2",
     "expect": "^1.16.0",
     "json-loader": "^0.5.3",
     "karma": "^0.13.22",