recipes/server: Rename python_pip resource.

Rename the python_pip resource to "devpi-server" so that it is
consistent with other Chef resource names.

Addresses: [#1](https://github.com/dave-shawley/devpi-cookbook/pull/1)
recipes/server: Rename directory resource.

Rename the directory resource to "devpi-server directory" so that it is
consistent with out Chef resource names.
Update metadata for 1.0.1.
Merge branch 'hotfix/1.0.1'