Updated the README.md to account for class reordering

When invoking the client parts of the module, the class should be invoked
as ldap::client instead of as ldap.
Merge pull request #33 from strangelittlemonkey/master

Updated the README.md to account for class reordering
Moving to new .fixtures.yml file
Additional config classes for OSs

Implemented a per OS class to provide further flexibility
when configuring a node as a client.

Fixes: issue #26
removed accidental comma
Merge branch 'master' of github.com:torian/puppet-ldap