Merge pull request #3 from opencobra/master

Back merging reaction patch from opencobra:master
Merge pull request #4 from opencobra/master

Pulling in patches from opencobra:master
brought in moma
updated the test to only allow moma to be tested if the cplex or gurobi solvers are present
Merge pull request #45 from danielhyduke/patches

Patch to make MOMA functional