Don't require a radius for remote images.
Merge branch 'refs/heads/version-0.6' into version-0.6-tableview-fixes

* refs/heads/version-0.6: (25 commits)
  Added example to readme for cell height.
  Allow the user to specify individual cell height in the cell hash.  If not specified, the cell with use the tableView.rowHeight property.
  Return element after set_attribute.
  Use snake_case for Objective-C methods. Fixes Issue #56.
  Fixing bug in set_nav_bar button methods
  README update for add improvements
  `set_easy_attributes` now working. autoresizingMask and frame are the first improvements this brings.
  Updated table screen specs
  Initial stab at tablescreen tests
  Minor refactors to clean up the screen module
  Added an  method for adding any view to any other parent view with attributes. Closes issue #18.
  Huzzah! Works brilliantly in ios 6 and ios 5 now!
  Better handling of the callback param.
  Modify console log to name the actual on_refresh method they need to implement if they defined a different callback.
  Use more ruby syntax instead of Obj-C syntax.
  Add a warning if the user didn't implement the on_refresh method or they specified a callback method but didn't implement it.
  Made callback pattern more consistent. Made all strings configurable. Updated documentation.
  Better readme formatting for refreshable.
  fix readme typo.
  Make sure that we're running on ios6 or higher
  ...
Merge pull request #59 from markrickert/version-0.6-remote-image-radius

Version 0.6 remote image radius