Merge branch 'version-0.6'
Version 0.6.3
Correct add_right_nav_button to be set_nav_bar_right_button

The example given seemed to be wrong or out of date.
Merge pull request #96 from andyw8/patch-1

Correct add_right_nav_button to be set_nav_bar_right_button
Remove :title accessor (breaks it, unnecessary)
bump
Version 0.6.4
readme
Merged master