Integrated puppetlabs-spec helper gem

can now run rake spec to integrate dependencies from .fixtures
(required for deploy::file type)
removed existing fixtures folders to allow spechelper to dynamically link in
the working directory.
Added first (basic) tests && updated docs

laying the ground work for improved testing.
Merge pull request #3 from preflightsiren/puppetlabs-spechelper

integrated Puppetlabs spec helper