! Add basic tablet detection to BrowserDetect.class.php

Signed-off-by: Spuds <spuds@spudsdesign.com>
! remove bracket clutter

Signed-off-by: Spuds <spuds@spudsdesign.com>
! Add is_android_tablet and is_tablet_pc for use in isBrowser() in case someone wants that too

Signed-off-by: Spuds <spuds@spudsdesign.com>
! Fix spelling

Signed-off-by: Spuds <spuds@spudsdesign.com>
Merge pull request #142 from Spuds/Fixins

! Add basic tablet detection to BrowserDetect.class.php