Add an MOI interface

[odow]

It might be cool if this package had an MOI interface so MCPs written in JuMP could be solved by this or PATH.

The interface should be pretty similar to:
https://github.com/chkwon/PATHSolver.jl/blob/master/src/MOI_wrapper.jl

[dfridovi]

Yep good to have this on the list ;)