Add npm start script

.babelrc

@@ -4,6 +4,7 @@
   ],
   "env": {
     "development": {
+      "sourceMap": "inline",
       "presets": [
         "power-assert"
       ]

package.json

@@ -7,11 +7,16 @@
     "lib"
   ],
   "scripts": {
+    "start": "abby compile, watch:*",
+    "watch:src": "babel src --out-dir lib --watch",
+    "watch:test": "babel test --out-dir spec --ignore test/spec.js --watch",
+    "watch:copy": "abby compile:copy --watch test/spec.js",
+    "watch:mocha": "abby mocha --log --watch lib/**/*.js,spec/**/*.js",
     "compile": "abby compile:* --parse serial",
     "compile:version": "babel -V",
     "compile:src": "babel src --out-dir lib --source-maps",
-    "compile:test": "babel test --out-dir spec",
-    "compile:raw": "cp test/spec.js spec/spec.js",
+    "compile:test": "babel test --out-dir spec --ignore test/spec.js",
+    "compile:copy": "cp test/spec.js spec/spec.js",
     "test": "abby compile, mocha.",
     "mocha": "mocha spec/index.js",
     "cover": "abby cover:* --parse serial --launch force",
@@ -43,6 +48,7 @@
     "babel-plugin-transform-export-extensions": "^6.5.0",
     "babel-preset-es2015": "^6.5.0",
     "babel-preset-power-assert": "^1.0.0",
+    "chokidar": "^1.4.3",
     "codeclimate-test-reporter": "^0.3.1",
     "eslint": "^2.8.0",
     "eslint-config-standard": "^5.1.0",