add dismissPopoverAnimated:completion: for post-animation cleanup

this is similar to apple's new dismissViewController:completion: and for
the same reason … there are times that some cleanup can only occur once
it's known that the popover is completely dismissed.
add initializer initWithViewController:delegate: for early access to delegate

at least one case where some requires view. , which causes a call to
viewDidLoad, which required access to the delegate for proper initialization

(the better thing would be to provide dataSource, and provide that to a
new initWithViewController:dataSource:, and allow the delegate to be
initialized later … but this seemed to be close enough)
allow public readonly access to FPTouch & FPPopoverView

perhaps text-fields weren't anticipated in a small popover, but in the
case where a text-field occurs, if the popover is small enough, it can
still fit entirely in the window above the keyboard … if it can be
manipulated.  by adding access to these items, it can be easily
manipulated with 3rd party DAKeyboardControl category.
Enum with fixed underlying type
Merge pull request #25 from johnkdoe/master

3 small changes, 2 to allow better integration with other 3rd party github code
Merge branch 'master' of github.com:50pixels/FPPopover
Fixed a memory leak caused by using "self" in a block.
Thanks "raja-baz"
ARC Support
Readme update
Popover with no arrow option
updated README showing how to use "no arrow" feature
respect the autorotate-policy of the contained view controller

in shouldAutorotateToInterfaceOrientation:, attempt to ascertain
whether _viewController responds to the same selector, and return that
value if so, or fall back to the original YES

in deviceOrientationDidChange:, attempt to ascertain whether
_viewController responds to shouldAutorotateToInterfaceOrientation:,
and if it does see if the deviceOrientation is supported, and whether
or not it's even necessary to attempt to call setupView again.
Merge pull request #34 from johnkdoe/master

respect the autorotate-policy of the contained view controller
iOS 6 orientation fix
no arrow implementation on demo
draw 3d border
alpha popover
added image for the readme about alpha popover
fixed link
image resized