fix SCOOP version, latets available version for download is v0.5.3
Merge pull request #77 from boegel/scoop

fix SCOOP version, latets available version for download is v0.5.3
Merge branch 'develop' of github.com:hpcugent/easybuild-easyconfigs into contrib_BLAST_and_NCBI-Toolkit
fixed comment on altversions of BLAST as per issue #67

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>