add a unit test for arast.py

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
minor update
Merge pull request #132 from levinas/master

Client code updates
Merge branch 'master' into issue-49
arast_score()
pipeline conversion: ranks before upload
n50 -> arast_score
add ConnectionError
Merge branch 'kbase' into ff
ArastUserInterrupt
Catch arast kill
add restart control/compute server scripts
Merge branch 'kbase' into ff
Merge branch 'master' of https://github.com/kbase/assembly into issue-49
add-comp.pl update: fix check_if_installed, add --dry-run
minor update
update dependency list

Link: https://github.com/kbase/assembly/issues/133
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
limit number of threads in idba
set OMP_THREAD_LIMIT in arast_popen to limit velvet threads
fix bug that caused 'Complete with errors' to disappear