feat(): add polyfill task

* feat(): polyfills task

* fix(): remove base option

* fix(): minification and small polyfills

* fix(): add readme and new file names

* fix(): change task names

* fix(): naming changes

scripts/npm/polyfills.readme.md

@@ -0,0 +1,46 @@
+## polyfills.js 
+Contains all polyfills needed to work on the largest range of devices. This is the default polyfill. 
+
+##### Targets: 
+- Android 4.4.2 and above
+- iOS back to iOS 8
+
+##### Includes:
+- All ES6 features
+- zone.js
+- ES7 reflection
+
+
+## polyfills.modern.js
+A limited of set of polyfills to work on more modern browsers. This file limits the number of ES6 polyfills which are already natively included in modern browsers.
+
+##### Targets: 
+- Android 5.0 and above
+- iOS 9 and above
+
+##### Includes:
+- zone.js
+- ES7 reflection, 
+- ES6 polyfills, except for:
+new regexp features,
+math features,
+symbols,
+typed arrays,
+weak maps / weak sets
+
+
+## polyfills.ng.js
+Only the required polyfill for Angular 2. This does not come with any ES6 polyfills. Note that all polyfill files listed here included the required polyfills for Angular 2 to work correctly.
+
+##### Targets:
+- Android 5.0 and above
+- iOS 10 and above
+
+##### Includes:
+- zone.js
+- ES7 reflection
+
+
+## ECMAScript 6 Compatibility
+
+To easily judge which polyfill you may need you can check this [ES6 support table](https://kangax.github.io/compat-table/es6/).