[travis] Add travis.yml

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 package-lock.json
+coverage

.travis.yml

@@ -0,0 +1,18 @@
+language: node_js
+node_js:
+  - "9"
+  - "8"
+  - "6"
+  - "4"
+script:
+  - "npm run test-travis"
+after_script:
+  - "npm install coveralls && cat coverage/lcov.info | coveralls"
+matrix:
+  fast_finish: true
+notifications:
+  irc:
+    channels:
+      - "irc.freenode.org#bigpipe"
+    on_success: change
+    on_failure: change

package.json

@@ -4,7 +4,11 @@
   "description": "Cross platform environment variables with process.env, window.name, location.hash and localStorage fallbacks",
   "main": "index.js",
   "scripts": {
-    "test": "mocha test.js"
+    "100%": "istanbul check-coverage --statements 100 --functions 100 --lines 100 --branches 100",
+    "test": "mocha test.js",
+    "watch": "mocha --watch test.js",
+    "coverage": "istanbul cover ./node_modules/.bin/_mocha -- test.js",
+    "test-travis": "istanbul cover node_modules/.bin/_mocha --report lcovonly -- test.js"
   },
   "repository": {
     "type": "git",
@@ -29,6 +33,7 @@
   "homepage": "https://github.com/3rd-Eden/env-variable",
   "devDependencies": {
     "assume": "^2.0.1",
-    "mocha": "^5.1.1"
+    "mocha": "^5.1.1",
+    "istanbul": "^0.4.5"
   }
 }