API proposal: adding twitter/facebook/other social media

[tdooner]

Hey @ondrae and anyone else watching, we've collected facebook/twitter/etc. for the brigades and it feels natural to include it here, e.g. so that the search pages on brigade.codeforamerica.org can include the social media handles.

I propose a structure like this:

{
   // ...rest of fields here...
  "social_profiles": {
    "facebook": "https://facebook.com/...",
    "twitter": "http://twitter.com/openoakland",   // prefer URLs over usernames
  }
}

A few keys in the social_profiles object would be well-known, and brigades could add new ones as desired. For example, facebook, twitter and github to begin with, and for example a brigade with an instagram account could add it there without impacting anything else.

I'll get a PR up for this shortly but wanted to run this by the audience here first.

[tdooner]

This happened.