removed no longer needed dependency on simplejson

docs/intro/install.rst

@@ -20,8 +20,6 @@ Requirements
 
 * `lxml`_ or `libxml2`_ (if using `libxml2`_, version 2.6.28 or above is highly recommended)
 
-* `simplejson`_ (not required if using Python 2.6 or above)
-
 * `pyopenssl <http://pyopenssl.sourceforge.net>`_ (for HTTPS support. Optional,
   but highly recommended)
 
@@ -111,7 +109,7 @@ Debian or Ubuntu (9.04 or older)
 
 If you're running Debian Linux, run the following command as root::
 
-   apt-get install python-twisted python-lxmlxml python-pyopenssl python-simplejson
+   apt-get install python-twisted python-lxmlxml python-pyopenssl
 
 Then::
 
@@ -124,7 +122,7 @@ Arch Linux
 
 If you are running Arch Linux, run the following command as root::
 
-   pacman -S twisted python-lxml pyopenssl python-simplejson
+   pacman -S twisted python-lxml pyopenssl
 
 Then::
 
@@ -178,7 +176,6 @@ There are two ways to install Scrapy in Windows:
 .. _lxml: http://codespeak.net/lxml/
 .. _libxml2: http://xmlsoft.org
 .. _pywin32: http://sourceforge.net/projects/pywin32/
-.. _simplejson: http://pypi.python.org/pypi/simplejson/
 .. _Zope.Interface: http://pypi.python.org/pypi/zope.interface#download
 .. _this Twisted bug: http://twistedmatrix.com/trac/ticket/3707
 .. _pip: http://pypi.python.org/pypi/pip

scrapy/utils/serialize.py

@@ -12,7 +12,7 @@ from scrapy.http import Request, Response
 class SpiderReferencer(object):
     """Class to serialize (and deserialize) objects (typically dicts)
     containing references to running spiders (ie. Spider objects). This is
-    required because simplejson fails to serialize dicts containing
+    required because json library fails to serialize dicts containing
     non-primitive types as keys, even when you override
     ScrapyJSONEncoder.default() with a custom encoding mechanism.
     """

setup.py

@@ -121,7 +121,5 @@ except ImportError:
     from distutils.core import setup
 else:
     setup_args['install_requires'] = ['Twisted>=8.0', 'w3lib>=1.1', 'lxml', 'pyOpenSSL']
-    if sys.version_info < (2, 6):
-        setup_args['install_requires'] += ['simplejson']
  
 setup(**setup_args)