added another data abstraction layer. added some UI elements to routine view controller. added routines store singleton.
added row deletion, reordering to routines store. Added edit button functionality to routine exercises view controller
data model, testing multiple selections
implemented single selection instead, exercise label shows the exercise name
added labels and textfields to header view. can pass data to and from elvc and revc.
remembers the sets, reps and weight text fields
added delegate method to pass user selection back to parent view controller. saves the exercise selection
fixed bug with saving exercise selection between elvc and revc. added editing functions for revc.
cleaned up some code
Merge pull request #4 from neuromanxr/develop

Develop