updated with navigation controller

- changed tab bar to flat colours
- changed two child views to be inside navigation controller views
- created a settings header for the tab bar controller

master / 1.0 / 5
custom tab names for each view

added customisation to header file for tab names, tab fonts, font size.
removed tab button text shadow

master / 1.0 / 5
added rotation choice

can now specify which side of the screen you want the tab bar. It works top, bottom, left, or right.

master / 1.0 / 6