Added eslint support and configuration

.eslintrc.json

@@ -0,0 +1,27 @@
+{
+    "env": {
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": 2018
+    },
+    "rules": {
+        "indent": [
+            "error",
+            "tab"
+        ],
+        "linebreak-style": [
+            "error",
+            "unix"
+        ],
+        "quotes": [
+            "error",
+            "double"
+        ],
+        "semi": [
+            "error",
+            "always"
+        ]
+    }
+}

package.json

@@ -14,5 +14,8 @@
     "express": "^4.16.3",
     "joi": "^13.4.0",
     "node-forge": "^0.7.5"
+  },
+  "devDependencies": {
+    "eslint": "^5.1.0"
   }
 }