Bugfixes and a new feature

[jlnquere]

Hi,

Here is 3 commits that I've made for my project needs:

• 1 Bugfix about the container view height. To understand the bug, simply do this in the PSStackedViewExample AppDelegate, and launch the App in horizontal orientation:

    // set root controller as stack controller
    ExampleMenuRootController *menuController = [[ExampleMenuRootController alloc] init];
    self.stackController = [[PSStackedViewController alloc] initWithRootViewController:menuController];

    ExampleViewController1 * vc = [[ExampleViewController1 alloc] init];
    [[self stackController] pushViewController:vc animated:NO];

• 1 bugfix about ContainerView transparentView frame.
• 1 new feature that allow overlapped VC to come back to front within a tap (like the old Twitter way).

J.

[steipete]

Looks all good - thanks!