User Instance
GET /api/users/200/?format=api
{
"username": "Louki",
"gravatar": "//www.gravatar.com/avatar/8faae758b567c459b5d2bbaaaecd3c10?d=wavatar",
"has_key": false
}GET /api/users/200/?format=api
{
"username": "Louki",
"gravatar": "//www.gravatar.com/avatar/8faae758b567c459b5d2bbaaaecd3c10?d=wavatar",
"has_key": false
}