R/metagene.R: removed useless else if in prepare_regions function (resolve #36)
R/metagene.R: removed useless else if in prepare_regions function (resolve #36)

Signed-off-by: Charles Joly Beauparlant <c79f23605b0df744f73b708f25ad0a27ad7758d6@crchul.ulaval.ca>

CharlesJB/metagene