added gitignore to benchmarks dir
merged in justin's stuff
interim
Merge branch 'req_true_vtree' of github.com:naylor-b/OpenMDAO-Framework into req_true_vtree
added justin's test file
Merge branch 'req_true_vtree' of github.com:naylor-b/OpenMDAO-Framework into req_true_vtree
fixed issue with required=True and vartrees
Merge pull request #1619 from naylor-b/req_true_vtree

fixed issue with required=True for vartrees
fixed failure when array shape is specified using tuple values of None
Merge pull request #1620 from naylor-b/req_true_vtree

fixed failure when array shape is specified using tuple values of None
Merge pull request #1618 from Kenneth-T-Moore/bench

Error message for wrong Jacobian size
works now