Added instructions for use in a Swift project.
Added link to iOS documentation.
Updated screenshot
updated screenshot
screen update
added more demos section
added spark friends link
Fill Color

Fill color for line chart :
* Default color is clearColor
* The user can define a color and a selection color for each line with
two new methods in JBLineChartViewDataSource protocol
Merge pull request #67 from jonparker/master

Added documentation for usage in a Swift project
Updated read me
Minor cleanup of PR #71
Merge branch 'master' of https://github.com/Jawbone/JBChartView
updated read me and change log of fill functions
Fixed readme
Updated pod spec
Use sizeWithFont: method for iOS 6.
Make the demo run in iOS 6 too.
Update the Podspec.
updated pod spec, change log and read me
Fixed OS checks