client can specify profile via command line argument; redefine concept of 'queue empty'
Merge branch 'master' of github.com:MG-RAST/AWE
make awe-client executable not dependent on mongodb
support job delete api
allow specifying a job's exclusive clients at job submisson
Merge pull request #11 from wtangiit/master

specify exclusive clients for a submitted job; job deletion api; and others