Allow Multiple Project URLs

[patricksrobertson]

Business Case:

During the crowd sourcing of project URLs it was discovered we should probably allow multiple project URLs for any given presentation. In order to fulfill the BostonRB mission of having an exemplary piece of Rails code, it was decided the projects attribute could be serialized. Currently we have "project_url" and "project_type" fields that have no validation or test coverage.

Acceptance Criteria:

Given an input of:

Presentation.new(:projects => "http://bostonrb.org") 

We should see a link to http://bostonrb.org on the presentation page

Given an input of:

Presentation.new(:projects => ["http://bostonrb.org", "http://seattlerb.org"])

We should see a link to both http://bostonrb.org and http://seattlerb.org on the presentation page.

[bcardarella]

Yeah I pushed those attributes by mistake a while back., they need coverage.

[ryanlecompte]

Hey guys,

Just submitted a pull request for this issue here:

#120

Thanks!

Ryan