Merge pull request #1 from cytryn/master

Fixed Example build settings (removed absolute file ref.)
call [self positionAndUpdatePopUpView] in setup

Sets popupView frame ready for display.
Added property 'alwaysShowPopupView'

When set to ‘Yes’ the popupView displays at 0 and 100 percent and
doesn’t automatically hide.
Added switch to show hide popupView
Made capitalization consistent throughout files

Use ‘popUp’ throughout, not ‘popup’
Merge branch 'show_always'
Updated screenshot URLs in README
Updated file names

Used correct capitalization.
Amended README
Updated podspec
Changed case of file names
First draft of custom label implementation

PopUpView wobbles about a bit as the value changes. This is because the
size is calculated for each new value and it frequently changes.

Perhaps the delegate could tell the popUpView what the largest string
would be ahead of time?
Fix: show first frame with correct popUp size