Remove app launching guide from README
Remove app launching guide from README

It is confusing to keep it here, it will be moved to the Wiki.

Also removing Travis Badge since it is no longer used for CI.
smartdevicelink/sdl_core,smartdevicelink/sdl_core,smartdevicelink/sdl_core,smartdevicelink/sdl_core,APCVSRepo/sdl_core,APCVSRepo/sdl_core,APCVSRepo/sdl_core,APCVSRepo/sdl_core,APCVSRepo/sdl_core