Julia 1.0 compatibility.

Julia 1.0 compatibility.
Otherwise feature identical to v0.0.1 , except the new @distributed parallel construction of the 1 and 2 electron integrals does not appear to work - but this is possible because I don't understand how the new package manager works well enough to correctly instantiate on every node.

This closes issue #1, thanks to @mszep.

Basic restricted Hartree Fock on Julia 0.6 and 0.7

v0.0.1

Ignore failing test; pin to Julia 0.6-->0.7