Rename release cycle to follow new filename structure.

Author: rwjblue

active/0000-improved-release-cycle.md renamed to text/0056-improved-release-cycle.md

@@ -1,3 +1,7 @@
+- Start Date: 2015-10-02
+- RFC PR: https://github.com/emberjs/rfcs/pull/56
+- Ember Issue: (leave this empty)
+
 # Refining the Release Process
 
 Ember balances a desire for overall stability with a desire for continued improvements using a two-pronged approach:
@@ -196,4 +200,4 @@ The canary and beta cycles help to ensure that popular add-ons work by the time
 
 That doesn't mean that add-on authors should never use private APIs: to the contrary, use of private APIs when no other choice is available helps us discover what APIs are missing.
 
-But a major goal of the 2.x series of Ember should be to identify ways to extend the stability promises that Ember offers to application authors to add-on authors.
+But a major goal of the 2.x series of Ember should be to identify ways to extend the stability promises that Ember offers to application authors to add-on authors.