Fixed content offset when shifting dates

The content offset was not being set correctly after shifting dates for
infinite scrolling. This was due to fromSectionOrigin not actually
pointing to the first item in the section.
Merge branch 'develop' of https://github.com/jerrodputman/DayFlow into jerrodputman-develop
Version bump (0.1.2)
Merge pull request #5 from ruslanskorb/develop

Version bump (0.1.2)