Move Promise#finally to stage 2, per July 2016 TC39 meeting.

README.md

@@ -15,7 +15,8 @@ Proposals follow [this process document](https://tc39.github.io/process-document
 | 🚀 | [Rest/Spread Properties](https://github.com/sebmarkbage/ecmascript-rest-spread)                           | Sebastian Markbage                 | 2 |
 | 🚀 | [Shared memory and atomics](https://github.com/tc39/ecmascript_sharedmem)                                 | Lars T Hansen                      | 2 |
 |   | [System.global](https://github.com/tc39/proposal-global)                                                  | Jordan Harband                     | 2 |
-|   | [Public Class Fields](http://jeffmo.github.io/es-class-public-fields/)            | Jeff Morrison                      | 2 |
+|   | [Public Class Fields](http://jeffmo.github.io/es-class-public-fields/)                                    | Jeff Morrison                      | 2 |
+|   | [Promise.prototype.finally](https://github.com/ljharb/proposal-promise-finally)                           | Jordan Harband                     | 2 |
 |   | [ArrayBuffer.transfer](https://gist.github.com/lukewagner/2735af7eea411e18cf20)                           | Luke Wagneer & Allen Wirfs-Brock   | 1 |
 | 🚀 | [`export * as ns from "mod";` statements](https://github.com/leebyron/ecmascript-export-ns-from)          | Lee Byron                          | 1 |
 | 🚀 | [`export v from "mod";` statements](https://github.com/leebyron/ecmascript-export-default-from)           | Lee Byron                          | 1 |