Writing more tests
Merge branch 'develop' of github.com:hfossli/AGGeometryKit into develop

Conflicts:
	DemoApplication/AGGeometryKit.xcodeproj/project.pbxproj
64-bit support on JAValueToString (only embedded in demo app)
Testing for nan-values and infinity-values as well
Improving demo
Complying to warning
Adding icons and logo