Add test script

Author: cheton

package.json

@@ -9,7 +9,8 @@
   },
   "scripts": {
     "prepublish": "npm run build",
-    "build": "babel --out-dir ./lib ./src"
+    "build": "babel --out-dir ./lib ./src",
+    "test": "tap test/*.js"
   },
   "files": [
     "bin",
@@ -31,6 +32,7 @@
     "babel-cli": "^6.22.2",
     "babel-preset-es2015": "^6.22.0",
     "babel-preset-stage-0": "^6.22.0",
-    "github": "^8.1.1"
+    "github": "^8.1.1",
+    "tap": "^10.0.2"
   }
 }

test/index.js

@@ -0,0 +1,4 @@
+var test = require('tap').test;
+
+test('noop', function(t) {
+});