fixed error in complex driver tutorial code
Updated response surface test so that it actually uses a response surface
Merge branch 'dev' of https://www.github.com/OpenMDAO/OpenMDAO-Framework into P64075670-need-response-surface-test
Merge pull request #1691 from hschilling/P64075670-need-response-surface-test

Edited the response surface test so it actually used a ResponseSurface