Set .eslintrc to show lint warning/error

The reason is that starting from version 1.0 of ESLint, all linting
rules are turned off by default.

Author: haxpor

.eslintrc

@@ -21,5 +21,62 @@
   "globals": {
     "it": true,
     "describe": true,
-  }
+  },
+  "rules": {
+        "no-alert": 2,
+        "no-array-constructor": 2,
+        "no-caller": 2,
+        "no-catch-shadow": 2,
+        "no-empty-label": 2,
+        "no-eval": 2,
+        "no-extend-native": 2,
+        "no-extra-bind": 2,
+        "no-implied-eval": 2,
+        "no-iterator": 2,
+        "no-label-var": 2,
+        "no-labels": 2,
+        "no-lone-blocks": 2,
+        "no-loop-func": 2,
+        "no-multi-spaces": 2,
+        "no-multi-str": 2,
+        "no-native-reassign": 2,
+        "no-new": 2,
+        "no-new-func": 2,
+        "no-new-object": 2,
+        "no-new-wrappers": 2,
+        "no-octal-escape": 2,
+        "no-process-exit": 2,
+        "no-proto": 2,
+        "no-return-assign": 2,
+        "no-script-url": 2,
+        "no-sequences": 2,
+        "no-shadow": 2,
+        "no-shadow-restricted-names": 2,
+        "no-spaced-func": 2,
+        "no-trailing-spaces": 2,
+        "no-undef-init": 2,
+        "no-underscore-dangle": 2,
+        "no-unused-expressions": 2,
+        "no-use-before-define": 2,
+        "no-with": 2,
+        "camelcase": 2,
+        "comma-spacing": 2,
+        "consistent-return": 2,
+        "curly": [2, "all"],
+        "dot-notation": [2, { "allowKeywords": true }],
+        "eol-last": 2,
+        "no-extra-parens": [2, "functions"],
+        "eqeqeq": 2,
+        "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
+        "new-cap": 2,
+        "new-parens": 2,
+        "quotes": [2, "double"],
+        "semi": 2,
+        "semi-spacing": [2, {"before": false, "after": true}],
+        "space-infix-ops": 2,
+        "space-return-throw-case": 2,
+        "space-unary-ops": [2, { "words": true, "nonwords": false }],
+        "strict": [2, "function"],
+        "yoda": [2, "never"]
+    }
 }