Use symbols over strings for default config values
Rewrite render_rabbit/kernel_parameters as one method.

This method now accepts a name and a hash, and uses both to construct any
Erlang-based syntax config file. Also stops using EOS for returned string so as
to avoid extraneous whitespace.

It also will now interpret hashes correctly, treating them like lists in
Erlang (I believe that's the name of the type), since they're basically
functionally equivalent. Some kind of funky logic in here, but it renders out
very nicely and consistent with the Opscode cookbook.
[1.1.0] Allow hashes as values/input to config parameters
Merge pull request #16 from jakedavis/interpret-hash

Interpret hash and refactor rendering methods