[Bug Fix] fixing Promise module link to Then in README

README.md

@@ -4,7 +4,7 @@ Provides an equivalent implementation of ES6(Harmony)
 in pure ES5 code and creates an ES6 environment for old browsers or
 JavaScript Engines. At least ES5 is required.
 To get standalone implementation of `Symbol`, `Promise`, or `Collections`(`Map`, `Set`, `WeakMap` and `WeakSet`)
-please visit [symbol-es6](https://github.com/ariyankhan/symbol-es6), [promise-es6](https://github.com/ariyankhan/promise-es6) and [collections-es6](https://github.com/ariyankhan/collections-es6).
+please visit [symbol-es6](https://github.com/ariyankhan/symbol-es6), [Then](https://github.com/ariyankhan/Then) and [collections-es6](https://github.com/ariyankhan/collections-es6).
 
 ## Implemented