Ability to set padding to tabs but keep the offset in the middle (Like Newsstand)
Merge branch 'master' into paddingTabs
Newsstand tabs like allowed via attr pstsPaddingMiddle

The tabs can start in the middle of the view width
and keep the selected position in the middle. The
unselected tabs keep visible while swiping.

- app:pstsPaddingMiddle accept a boolean value
Make sure the padding is equal in eahc side (if set)
Padding and offset calculation polish

- Make sure the padding is equal in each side (if set)
- Calculation of the offset with lines diff only if neccesary
Update README
Update README
Merge branch 'paddingTabs' branch for the option to have tabs like Newsstand google app