Minimum Django 1.5 version issue 1.5.6

Author: tomchristie

README.md

@@ -34,7 +34,7 @@ There is a live example API for testing purposes, [available here][sandbox].
 # Requirements
 
 * Python (2.6.5+, 2.7, 3.2, 3.3, 3.4)
-* Django (1.4.11+, 1.5.5+, 1.6, 1.7)
+* Django (1.4.11+, 1.5.6+, 1.6, 1.7)
 
 # Installation
 

docs/index.md

@@ -51,7 +51,7 @@ Some reasons you might want to use REST framework:
 REST framework requires the following:
 
 * Python (2.6.5+, 2.7, 3.2, 3.3, 3.4)
-* Django (1.4.11+, 1.5.5+, 1.6, 1.7)
+* Django (1.4.11+, 1.5.6+, 1.6, 1.7)
 
 The following packages are optional:
 

tox.ini

@@ -11,7 +11,7 @@ setenv =
        PYTHONDONTWRITEBYTECODE=1
 deps =
        django14: Django==1.4.11
-       django15: Django==1.5.5
+       django15: Django==1.5.6
        django16: Django==1.6.8
        django17: Django==1.7.1
        djangomaster: https://github.com/django/django/zipball/master