GET /api/fellows - get fellows of the logged-in user

GET /api/fellows?traveller=<username> - get fellows of the named user, assuming they consider you a fellow

  <fellows>
    <can_see_trips_of>
      <name>Matt Biddulph</name>
      <status>is at home in London</status>
      <icon_id>361ff28715577fc9d934deef590015be</icon_id>
      <nick>mattb</nick>
      <url>http://www.dopplr.com/traveller/mattb</url>
      <travel_today>false</travel_today>
    </can_see_trips_of>
    <can_see_trips_of>
      ...
    </can_see_trips_of>
    <shows_trips_to>
      <name>Matt Biddulph</name>
      <status>is at home in London</status>
      <icon_id>361ff28715577fc9d934deef590015be</icon_id>
      <nick>mattb</nick>
      <url>http://www.dopplr.com/traveller/mattb</url>
      <travel_today>false</travel_today>
    </shows_trips_to>
    <shows_trips_to>
      ...
    </shows_trips_to>
  </fellows>
  

  {
    "can_see_trips_of":[
      {"status":"is at home in London","name":"Matt Biddulph",
       "icon_id":"361ff28715577fc9d934deef590015be","nick":"mattb",
       "url":"http://www.dopplr.com/traveller/mattb","travel_today":false},
    ],
    "shows_trips_to":[
      {"status":"is at home in London","name":"Matt Biddulph",
       "icon_id":"361ff28715577fc9d934deef590015be","nick":"mattb",
       "url":"http://www.dopplr.com/traveller/mattb","travel_today":false},
    ],
  }