introduce a threshold that has to be crossed to flip page
Revert "introduce a threshold that has to be crossed to flip page"

This reverts commit d3c12a31c4eb2e8673133bbfcbf63bf5bfd65a0b.
cancel move to next page if a configurable threshold has not been reached

update demo with example
Merge pull request #47 from martenbiehl/master

introduce a threshold that has to be crossed to flip page