Use constant for undefined progress value
Reference the sharedView via self not class name.

This would be consistent with the rest of the file, and would permit a subclass to override the implementation of sharedView.
Fix: progress HUD appearing on external display

If an external display is connected and contains UIWindow, SVProgressHUD would previously pick it instead of the window on the main screen.
-allowing the label's text colour and font to be changed, otherwise it will retain the color/font values used the very first time only when it was initiated
Merge pull request #343 from andreyvit/master

[PATCH] Fix: progress HUD appearing on external display
Add @3x assets, Fixes #334
Merge branch 'master' of https://github.com/TransitApp/SVProgressHUD
Update license, Fixes #290
Merge pull request #352 from peterline/master

Allow changeability of string label once initiated, also Fixes #328
Merge pull request #308 from paddlefish/selfsharedview

Reference the sharedView via self not class name.
Fixes #275
Merge pull request #243 from vtourraine/master

Use constant for undefined progress value
Merge branch 'master' of https://github.com/TransitApp/SVProgressHUD
Small adjustement to #243
Update README.md