grammar tweak in readme.txt
grammar tweak in readme.txt

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