Lay in framework for BarChartModel and BarChartModel Examples
updated chart colors with new colors and new order
need to remove the build incrementer
completed base framework for barChartModel including delegates and two examples
Merge branch 'master' into BarChartModel

moving branch to master
cleaned up the examples and added some usage comments
minor edits
minor edit
corrected initializer for BarChartModel.  cleaned up examples.
Changed the retain value to weak for how BarChartModel references BarChartView.  Since we count on the view controller to have either have a strong reference to it (via code or via a xib/storyboard) and a strong reference to us, holding it strongly would create a retain cycle.
updated project:
 - added back IBOutlet
 - cleaned up example controller
 - added some documentation to BarChartModel
Merge pull request #7 from emichaud/master

Version 4.3 
Enhancements to BarViewDelegate, New Helper Class BarChartModel