Add entrypoint option to create_container
Add cpu_shares option to create_container
Add working_dir option to create_container
Merge pull request #144 from bfirsh/add-missing-create-container-options

Add entrypoint, cpu_shares and working_dir options to create_container
fix "binds" docs: { host_dir: docker_dir }

Not the other way around.
Merge pull request #146 from felixhummel/fix-readme-binds

fix "binds" docs: { host_dir: docker_dir }