Not including extras by default. Also added subspecs to selectively include extra components

pod 'QuickDialog' will now only include the 'core' elements

pod 'QuickDialog/Core’ will include the core elements
pod 'QuickDialog/Extras' will include all extras
pod 'QuickDialog/QPicker' will only include the QPicker extras
... etc...
Merge pull request #611 from bofrese/podspecs

Not including extras by default. Also added subspecs to selectively include extra components
Fix Issue #617: QRadioElement selected item not appearing as default value

Fix Issue #617: QRadioElement selected item not appearing as default
value
Merge pull request #620 from kayrules/master

Fix Issue #617 QRadioElement default value for selected item index
Fixed issue where trying to reload a cell that is inside a hidden section inserts nil into an array.  Skip reloading elements which are inside hidden sections.
Merge pull request #628 from bgraner/master

Fixed issue where trying to reload a cell that is inside a hidden sectio...
Merge branch 'master' of https://github.com/escoz/QuickDialog into on123master

# By Bo Frese (1) and others
# Via Eduardo Scoz (3) and nazbot (1)
* 'master' of https://github.com/escoz/QuickDialog:
  Fixed issue where trying to reload a cell that is inside a hidden section inserts nil into an array.  Skip reloading elements which are inside hidden sections.
  Fix Issue #617: QRadioElement selected item not appearing as default value
  Not including extras by default. Also added subspecs to selectively include extra components