A couple of fixes in cplex interface
The objective's name gets set in the cplex problem
Added MANIFEST.in
Try scaling problem if infeasible (glpk_interface)
Included dependencies in README.md
Included installation instructions in README.md
Removed download_url in setup.py
Fixed an issue with variable primal rounding if lb or ub were None
skip test_setting_lower_bound_higher_than_upper_bound_raises for now (needs to be implemented in CPLEX interface)