Add Travis Support

Author: excalith

.eslintrc.json

@@ -0,0 +1,12 @@
+{
+  "extends": ["prettier", "plugin:prettier/recommended"],
+  "env": {
+    "es6": true,
+    "node": true
+  },
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "module"
+  }
+}

.travis.yml

@@ -0,0 +1,13 @@
+language: node_js
+cache:
+  directories:
+    - "node_modules"
+node_js:
+  - "node"
+  - "lts/*"
+  - "7"
+  - "6"
+  - "5"
+  - "4"
+script:
+  - npm test