replace Redisent with Credis (also adds native phpredis support)

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 **Note:** This release introduces backwards incompatible changes with all previous versions of php-resque. Please see below for details.
 
+### Redisent (Redis Library) Replaced with Credis
+
+Redisent has always been the Redis backend for php-resque because of its lightweight nature. Unfortunately, Redisent is largely unmaintained.
+
+[Credis](http://example.com/) is a fork of Redisent, which among other improvements will automatically use the [phpredis](https://github.com/nicolasff/phpredis) native PHP extension if it is available. (you want this for speed, trust me)
+
+php-resque now utilizes Credis for all Redis based operations. Credis automatically required and installed as a Composer dependency.
+
 ### Composer Support
 
 Composer support has been improved and is now the recommended method for including php-resque in your project. Details on Composer support can be found in the Getting Started section of the readme.

composer.json

@@ -11,8 +11,15 @@
 			"email": "chris@bigcommerce.com"
 		}
 	],
+	"repositories": [
+		{
+			"type": "vcs",
+			"url": "https://github.com/chrisboulton/credis"
+		}
+	],
 	"require": {
-		"php": ">=5.3.0"
+		"php": ">=5.3.0",
+		"colinmollenhour/credis": "dev-master"
 	},
 	"require-dev": {
 		"phpunit/phpunit": "3.7.*"