improvement - Foursquare venue class added method getVenue by id

Signed-off-by: Matteo Magni <matteo@magni.me>
Added the ability to enter a list of categoryId in foursquare venue search

Signed-off-by: Matteo Magni <matteo@magni.me>
Merge branch 'improvement/foursquare-search-venue-categoryid' into roundtown