- Add Erubis dependency.
- Add a basic client generator.
- Basic client generator works but has issues with cross-resource
  identity properties and doesn't have support for defining (and
  expecting) request body payloads.
- More hackery.
- Fix parameter lookup logic.
- Fix up connect methods.
- More tweaks.
- Fix broken tests.
- Add docstrings.
- Add docstrings.
- Use the latest version of MultiJson.
- Pretty print JSON.
- Remove fiel.
- Remove debug statements.
- Add heredoc quoting.
- Add test from Scott.
Merge pull request #26 from interagent/client-generator

- A new `bin/heroics-generate` script renders a Ruby client built from
  a JSON schema.  Given a Heroku Platform API schema you can render a
  client for Heroku with:

  ```
  bundle exec bin/heroics-generate PlatformAPI schema.json https://api.heroku.com > myclient.rb
  ```

  The entire client, including a baked in copy of the schema, is
  written to a single file.  Right now the version and cache options
  are hard-coded in `bin/heroics-generate`.  Suggestions on how we
  should accept these kinds of values would be appreciated.  So far
  I've tried to avoid a configuration file, preferring to pass all
  options on the command-line, but it seems like that'll be pretty
  ugly for these bits.

- A new `Heroics.generate_client` method takes a `Heroics::Schema`
  instance, along with some basic configuration information, and
  renders client code.  It's using Erubis and a template to do so.
  API documentation for the generated code can be generated with Yard
  using a command like `yard doc -m markdown myclient.rb`.  The API
  documentation is decent and should help make clients much more
  accessible.  It's currently missing information about the payload
  format you need to specify when making requests, and also about the
  payload format you can expect in responses.

  Some examples:

    http://cl.ly/image/3B3Q3H472J2N
    http://cl.ly/image/0108282T2d3E
    http://cl.ly/image/46412o253v3Y

- A new `Heroics::LinkSchema.parameter_names` method correctly
  dereferences property definitions defined in link hrefs.  New
  `Parameter` and `ParameterChoice` (for `anyOf` and `oneOf` identity
  properties, primarily) are returned and used by the code generator
  to build function signatures and Yard-compatible docstrings.