Add evaluating verify_chick_position in update_stage
Add module verify_chick_position
Set linear velocity to chick when position lower than start
Add chick sequence in verify_chick_position
Stop moving chick whne reached or already in the starting point
Fixed chick position
Merge branch 'master' of https://github.com/j4cksw/chickrunner
Fixed chick move into the flame and change admob id