Subviews UIView instead and fills in missing properties
Manually sets backgroundColor to clearColor

This is because it was supplied for free in UIProgressView. Without this, the background around the curved ends will be black.
Stripes are animated and present when the progress is 0% or 100%. 0% is represented as a full bar with stripes (setup phase). The project supports ARC and modern Objective-C. Animation is re-enable when you make the view visible again.
Merge pull request #10 from Panajev/master

Upgraded project and files.