Added Resource Attributes

[Protossoario]

Modified the base template to add a table-like structure for the Attributes section of a Resource, if added.

[coveralls]

Coverage remained the same at 95.63% when pulling ac38d02 on Protossoario:master into b94a662 on danielgtaylor:master.

[wyattjoh]

What's the ETA on this PR?

[danielgtaylor]

@wyattjoh I'm looking at it today, will try to get it in (maybe update the example) and push a release if everything is good.

[danielgtaylor]

@Protossoario thanks for this pull request. I'm going to merge it in, but before doing another release I'd really like to 1. add support for attributes in more places and 2. support nested structures & arrays. Work is underway to make these a bit easier but it's probably still a couple weeks away from implementation.

Edit: to anybody finding this PR, the only way to make it work is to set attributes in the resource section:

# My API

## Question [/questions/{id}]

+ Parameters
    + id: `abc123` (required) - Unique question identifier

+ Attributes
    + title (required) -  Short question overview
    + body - Full question description

### Get a question [GET]

+ Response 200

[Protossoario]

@danielgtaylor yeah, I thought about adding support for nested structures, but couldn't figure out a quick way to present them neatly.

[danielgtaylor]

@Protossoario yeah, it's more difficult than it initially seems. I'm still working on coming up with a good presentation.