List all members of a team

GET /teams/<team_slug>/members


Response:

[
  {
    username: "",
    first_name: "",
    ...
  },
  ..
]


Add existing member to the team

POST /teams/<team_slug>/members


Request:

{
  username: ""
}

Response:

{
  username: "",
  first_name: "",   
  ...
}


Remove a member from the team

DELETE /teams/<team_slug>/members/<username>