Update Readme.md
wip: playing music from iTunes previews
Merge pull request #7 from monr0e/patch-1

Update Readme.md
fix tests, some older changes
Merge branch 'AVMusicPlayer'
screen orientation on iOS 6
fix: correctly initialize toolbar buttons
updated readme with chapter for development
default image to enable 4-inch display
update of appledoc run
set up travis using xctool

see http://blog.thepete.net/blog/2013/05/07/using-travis-ci-and-xctool-to-build-and-test-ios/
update podfile to adapt to recent cocoapod changes
share Xcode schemes to other users and ignore user-specific settings on pods
add travis-ci status image to readme
adjust appearance of slider
polish look on tall phones by removing reflection and always show scrubber overlay
polishing UI: cover art with shadow and textured background
deployment target to iOS 5
graphics for upcoming iPad version
externalized appledoc to run it via travis + more picky appledoc config + re-run of appldoc