Fix taxonomy nav automation.

Ensure that the automation process can find the current active view
controller's navigation item and locate the browse button.
Merge pull request #16 from walmartlabs-samsclub/issue/SCIPAD-3007

Fix taxonomy nav automation.
Merge pull request #17 from walmartlabs-samsclub/release/2014-9

Merge ios-shared release changes
Merge pull request #122 from walmartlabs-samsclub/issue/SCIPAD-3007-fix-nav-automation

Issue/scipad 3007 fix nav automation