Updated as certicate  as expire in  documented version
Updated as certicate  as expire in  documented version

The current  documentation points to use a version of notary which has an expired certicate.

Updated the version of notary_autobuilds to 0.5.1 from 0.4.2.

Change the shared volume to notarycerts:/var/lib/notary/fixtures from notarycerts:/go/src/github.com/docker/notary/fixtures  as location of certificate has changed.
londoncalling/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,londoncalling/docker.github.io,londoncalling/docker.github.io,londoncalling/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io