#UIView+BIShadow UIView category for setting shadow.

##Installation Just drag&drop the UIView+BIShadow.h/m files in your Xcode Project.

##Usage

myView.shadowColor = [UIColor lightGrayColor];
myView.shadowOpacity = 0.8;

// Set shadow above the view.
NSDictionary *shadowDictionary = @{UIViewShadowOffset.top : @(20)};
[myView setShadow:UIViewShadowTop withOffsets:shadowDictionary];