njdehoog/NHBalancedFlowLayout — pull request #8 by jgraff (2014-01-07 20:17:13+00:00)
Title: Added layout support for section headers and footers. 

Header and footer sizes are controlled via the properties:

* headerReferenceSize
* footerReferenceSize

Or dynamically (per section) by the protocol methods:

* referenceSizeForHeaderInSection
* referenceSizeForFooterInSection