replaced readsfrom with open due to deprecation of the former
dependency on 0.3 (readsfrom deprecated)
Updated to support the new ClusterManager interface
README cleanup
Update README.md
Add an option for qsub to specify queue
Merge branch 'master' of https://github.com/nlhepler/ClusterManagers.jl

Conflicts:
	src/qsub.jl
Merge
Added queue variable in type
Added option "queue" for SGA and PBS systems