Add the Integer#decode method
Add the Integer#decode method

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

lostdj/avian,marcinolawski/avian,marcinolawski/avian,getlantern/avian,joshuawarner32/avian,dicej/avian,bgould/avian,minor-jason/avian,ucdseniordesign/avian,getlantern/avian,ucdseniordesign/avian,marcinolawski/avian,joshuawarner32/avian,minor-jason/avian,bgould/avian,lwahlmeier/avian,MaartenR/avian,MaartenR/avian,lostdj/avian,MaartenR/avian,minor-jason/avian,bigfatbrowncat/avian-pack.avian,bigfatbrowncat/avian-pack.avian,MaartenR/avian,lwahlmeier/avian,minor-jason/avian,dicej/avian,ucdseniordesign/avian,getlantern/avian,marcinolawski/avian,ucdseniordesign/avian,lwahlmeier/avian,getlantern/avian,lostdj/avian,bgould/avian,dicej/avian,bigfatbrowncat/avian-pack.avian,joshuawarner32/avian,dicej/avian,lostdj/avian,joshuawarner32/avian,bigfatbrowncat/avian-pack.avian,lwahlmeier/avian,bgould/avian