add larger example data file that won't choke on two-week view because of insufficient data
update getCurrentDay to new chart.getCurrentDomain() function returning complex object (to fix two-week nav issues)
point to tideline's most recent master, where breaking changes incorporated on this branch are current on tideline
Merge pull request #9 from tidepool-org/jebeck/two-week-nav-fix

Adjust for the breaking changes introduced in tideline to fix some bugs in the navigation between one-day and two-week view.

Also switched to a larger example data file pending the fixes for small datasets filed as issues in tideline.