Add iOS 7 style icons
Updated podspec to 0.1.1.
Update README.md for new screenshots.

As icons updated in ＃7，screenshots needs to be updated as well.
Implemented automatic adjustment of font color based on chosen blurTintColor. Fixes #3
textLabel now uses UIFontDescriptor with UIFontTextStyleBody to setup it’s 17.0pt font. Fixes #5
Updated screenshot URLs.
Updated podspec to 0.2
Renamed pragma section to foreground color.
Added a public property ‘image’. This image will be used to set the imageView.image property but adds an intermediate step in which the alpha channel is used to colorize the image that is finally displayed. fixes #3
Updated podspec.
Fixed layout issues with multiline label. updateConstraints is now calling super in the end and removes all constraints in the beginning.
Fixed resources as xcasset is not compiled in current version of CocoaPods.
Moved presentation to instance methods. refs #10
Replaced internal imageView with symbolView.
Simplified internal managing of symbolView and added option to display activity through a UIActivityIndicatorView.
Put loading of image for different styles into separate method.
Moved blurTintColor generation to separate method.
Added method for comfortable dismissal.
Updated sample project.
Updated for new activity-mode.