Merge pull request #8 from wixardy/master

Couple of fixes and project reorganization
Some memory leaks resolved
Some minor analyzer warnings resolved
Merge pull request #9 from MiMo42/master

Some memory leaks resolved
Update of DemoWindow.xib

Icon selection working again, added tab style PSMLiveChatTabStyle to
style popup
Deprecated methods calls replaced by new ones

Deprecated -compositeToPoint:operation:fraction: calls replaced by new
drawing methods.
Update of PSMUnifiedTabStyle

Deprecated -compositeToPoint:operation:fraction: calls replaced by new
drawing methods.
Update of PSMMetalTabStyle

Deprecated -compositeToPoint:operation:fraction: calls replaced by new
drawing methods.
Update of PSMAquaTabStyle

Deprecated -compositeToPoint:operation:fraction: calls replaced by new
drawing methods.
Update of PSMLiveChatTabStyle

Deprecated -compositeToPoint:operation:fraction: calls replaced by new
drawing methods.
Update of DEMO app

'largeImage' support added. Can be switched ON/OFF to show/hide a large
image instead of the icon (used for vertical bars only)
Update of project file

largeImage.png no longer part of the framework. Has been moved to be a
part of demo app.
Update of PSMTabBarCell

added
-scaleImageWithSize:toFitInSize:scalingType: (we cannot use the
equivalent of NSCell which is private)
some more work on demo app

Some more work on large image support for vertical bars
Update of PSMAdiumTabStyle

Some work on vertical appearance.
Added more HiDPI assets.
Update of project file

PSMUnifiedTabStyle no longer member of demo app target
Update of Base.xcconfig

Now warns about deprecated objc implementations
style interface revamped

We now using more 'programming by exception'
Update of PSMAquaTabStyle

Adjusted to revamped style interface