User Instance
GET /api/users/157/?format=api
{
"username": "bobstermyang",
"gravatar": "//www.gravatar.com/avatar/db7d44f70b63b3a24d069e9ed028c654?d=wavatar",
"has_key": false
}GET /api/users/157/?format=api
{
"username": "bobstermyang",
"gravatar": "//www.gravatar.com/avatar/db7d44f70b63b3a24d069e9ed028c654?d=wavatar",
"has_key": false
}