Added 'implicit_format' flag to avoid pass /json in get url
Added second arg with Requet, to callback func

	modified:   lib/Eixo/Rest/Client.pm
	modified:   lib/Eixo/Rest/Request.pm
Added patch to new features (container#copy, images#insertFile, images#history, images#inspect)
Passing test

	modified:   lib/Eixo/Docker/Container.pm
	modified:   lib/Eixo/Docker/Image.pm
	new file:   lib/Eixo/Docker/ImageCommit.pm
	modified:   t/041_images_manipulation.t
	modified:   t/042_images_inspection.t