make idealFramerate a float

(there's a division involved anyhow, so we can as well go with higher precision)
install VIDS-videoplugin.pd
only print RASTER-messages in verbose mode
fixed typo
MARK macro

Signed-off-by: IOhannes m zmölnig <zmoelnig@umlautQ.umlaeute.mur.at>
added m_width/m_height members
use static method to make videoInput less verbose
VIDS-properties
using m_width/m_height
added USB-please-read to VIDS-videoplugin.pd