add mqtt.js eslint configuration

Author: Tabrizian

.eslintrc.json

@@ -0,0 +1,75 @@
+{
+  "env": {
+    "browser": true,
+    "node": true,
+    "mocha": true
+  },
+  "rules": {
+    "quotes": [
+      1,
+      "single"
+    ],
+    "no-mixed-requires": [
+      0,
+      false
+    ],
+    "no-underscore-dangle": 0,
+    "yoda": [
+      1,
+      "always"
+    ],
+    "indent": [
+      2,
+      2,
+      {"SwitchCase": 1}
+    ],
+    "brace-style": [
+      2,
+      "1tbs"
+    ],
+    "comma-style": [
+      2,
+      "last"
+    ],
+    "default-case": 2,
+    "func-style": [
+      2,
+      "declaration"
+    ],
+    "guard-for-in": 2,
+    "no-floating-decimal": 2,
+    "no-nested-ternary": 2,
+    "no-undefined": 2,
+    "radix": 2,
+    "space-before-function-paren": [
+      1,
+      "always"
+    ],
+    "space-after-keywords": [
+      2,
+      "always"
+    ],
+    "space-before-blocks": 2,
+    "spaced-comment": [
+      2,
+      "always",
+      {
+        "exceptions": [
+          "-"
+        ],
+        "markers": [
+          "eslint",
+	  "jshint",
+          "global"
+         ]
+      }
+    ],
+    "strict": [
+      2,
+      "global"
+    ],
+    "wrap-iife": 2,
+    "camelcase": 0,
+    "new-cap": 0
+  }
+}