remove stage-3, it is included in stage-2

Author: jamestalmage

lib/babel.js

@@ -53,7 +53,7 @@ var powerAssert = createEspowerPlugin(babel, {
 
 // if generators are not supported, use regenerator
 var options = {
-	presets: ['stage-2', 'stage-3', 'es2015'],
+	presets: ['stage-2', 'es2015'],
 	plugins: [powerAssert, 'transform-runtime'],
 	sourceMaps: true
 };

package.json

@@ -85,7 +85,6 @@
     "babel-plugin-transform-runtime": "^6.3.13",
     "babel-preset-es2015": "^6.3.13",
     "babel-preset-stage-2": "^6.3.13",
-    "babel-preset-stage-3": "^6.3.13",
     "babel-runtime": "^6.3.19",
     "bluebird": "^3.0.0",
     "chalk": "^1.0.0",