User Instance
GET /api/users/205/?format=api
{
"username": "Ragnar",
"gravatar": "//www.gravatar.com/avatar/07ed5841dc47b2915cea1519cbb5a41c?d=wavatar",
"has_key": false
}GET /api/users/205/?format=api
{
"username": "Ragnar",
"gravatar": "//www.gravatar.com/avatar/07ed5841dc47b2915cea1519cbb5a41c?d=wavatar",
"has_key": false
}