range time with minTime and maxTime parameters
and complete documentation with a testcase.
make use a while-loop instead of two for-loop,
seems compatible with futureOnly parameter
Merge branch 'master' of https://github.com/CedricLevasseur/jquery-simple-datetimepicker into range_time

Conflicts:
	jquery.simple-dtpicker.html
	jquery.simple-dtpicker.js