add animation timing#1

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johndpope wants to merge 6 commits intoPearapps:masterfrom

johndpope:master

Commits on Dec 3, 2013

add animation timing
John Pope
committed
use button to refresh
John Pope
committed
update sample button code.
John Pope
committed

Commits on Dec 4, 2013

updated example
John Pope
committed
remove PRTween classes.
John Pope
committed
animation tweaking
John Pope
committed