DMCSHD-22 #start create git repository.
add description file.
add cache library.
#done state api.
 * add library. (cache, func)
Merge branch 'feature/state' into develop
#done update api
#resolve clears file status cache.
Merge branch 'feature/update' into develop
DMCSHD-22 #resolve add apis for long polling testing.
update README.md
update README.md
move files for library.
DMCSHD-27 #resolve add long poling library and sample code.
update README.md
Merge branch 'master' into github-master

Conflicts:
	README.md