add eslint config

As of now we are planning not to enable all the rules but do it step by step.

.eslintrc

@@ -1,4 +1,5 @@
 {
+  "extends": ["eslint:recommended","google"],
   "parserOptions": {
     "ecmaVersion": 6
   },
@@ -9,7 +10,40 @@
     "exampleGlobalVariable": true
   },
   "rules": {
-    "eqeqeq": 1
+    "eqeqeq": 1,
+    "indent": 0,
+    "no-tabs": 0,
+    "max-len": [2, 200],
+    "semi":0,
+    "valid-jsdoc":0,
+    "comma-spacing":0,
+    "quotes":0,
+    "no-multi-spaces":0,
+    "no-trailing-spaces":0,
+    "space-before-function-paren":0,
+    "spaced-comment":0,
+    "padded-blocks":0,
+    "comma-dangle":0,
+    "keyword-spacing":0,
+    "key-spacing":0,
+    "object-curly-spacing":0,
+    "require-jsdoc":0,
+    "no-var":0,
+    "block-spacing":0,
+    "brace-style":0,
+    "quote-props":0,
+    "no-mixed-spaces-and-tabs":0,
+    "space-before-blocks":0,
+    "func-call-spacing":0,
+    "eol-last":0,
+    "camelcase":0,
+    "guard-for-in":0,
+    "no-prototype-builtins":0,
+    "arrow-parens":0,
+    "one-var":0,
+    "semi-spacing":0,
+    "no-multiple-empty-lines":0,
+    "no-unused-vars":0
   },
   "plugins": [
   ]

package.json

@@ -40,6 +40,8 @@
     "xml2js": "^0.4.16"
   },
   "devDependencies": {
+    "eslint": "^6.1.0",
+    "eslint-config-google": "^0.13.0",
     "gulp": "^4.0.2",
     "gulp-shell": "^0.6.5",
     "gulp-sourcemaps": "^1.5.2",
@@ -53,14 +55,10 @@
     "run-sequence": "^1.1.0",
     "test-until": "^1.1.1"
   },
-  "eslintConfig": {
-    "env": {
-      "es6": true
-    }
-  },
   "scripts": {
     "start": "node app.js",
     "stop": "node stop.js",
+    "lint": "eslint ./cli ./lib app.js forever.js",
     "package": "node cli/package.js",
     "test": "mocha tests/*.*.integ.test.js --timeout 90000 && nyc mocha tests/*.*.unit.test.js"
   },