Description of problem:
Installing the rabbitvcs-thunar package does not have a required package python-simplejson listed as a dependency.

Version-Release number of selected component (if applicable):
Version     : 0.16
Release     : 3.fc21

How reproducible:
Very.

Steps to Reproduce:
1. $ sudo yum install rabbitvcs-thunar
2. $ thunar

Actual results:
When Thunar opens the context menus for RabbitVCS do not appear. Thunar from the terminal to see the error:

Traceback (most recent call last):
  File "/usr/lib64/thunarx-2/python/RabbitVCS.py", line 43, in <module>
    import rabbitvcs.ui.property_page
  File "/usr/lib/python2.7/site-packages/rabbitvcs/ui/property_page.py", line 40, in <module>
    from rabbitvcs.services.checkerservice import StatusCheckerStub as StatusChecker
  File "/usr/lib/python2.7/site-packages/rabbitvcs/services/checkerservice.py", line 48, in <module>
    import simplejson
ImportError: No module named simplejson


Expected results:
Yum installs the additional package and Thunar displays the RabbitVCS context menus correctly.

Additional info:
I suspect this python module is used by more then just the Thunar plugin so the dependency should probably be listed in rabbitvcs-core with the others so all the other plugins also work correctly.