Reduced the size of the extdata and added dontrun to all examples to reduce check time to less than 5 minutes

Signed-off-by: Charles Joly Beauparlant <Charles.Joly-Beauparlant@crchul.ulaval.ca>
DESCRIPTION: Changed the order of the names of an author that was inversed

Signed-off-by: Charles Joly Beauparlant <Charles.Joly-Beauparlant@crchul.ulaval.ca>
DESCRIPTION: Version bumped to what is recommended in Bioconductor packages guidelines

Signed-off-by: Charles Joly Beauparlant <Charles.Joly-Beauparlant@crchul.ulaval.ca>