#9 Finished documentation

USAGE.md

@@ -175,14 +175,31 @@ The admin API has no authentication so it should be blocked to all except admin
 	- `404`: Peer not found
 	- `500`: Other server error
 
-#### 2.2.4. List users
+#### 2.2.4. Add user
 
-TODO
+- **REQUEST:** `POST /user`
+- **FILE:** `back/lib/admin/user/add`
+- **QUERYSTRING:** `?t=$token&host=$hostname&user=$username`
+	- `t`: The token from a GET request
+	- `host`: The hostname chosen for the new peer
+	- `user`: The username chosen
+- **RESPONSE:** 
+	- `202`: Added
+	- `400`: Invalid input
+	- `403`: Bad token
+	- `409`: Username already taken
+	- `500`: Error
 
-#### 2.2.5. Add user
+#### 2.2.5. Delete user
 
-TODO
-
-#### 2.2.6. Delete user
-
-TODO
+- **REQUEST:** `DELETE /user`
+- **FILE:** `back/lib/admin/user/del`
+- **QUERYSTRING:** `?t=$token&user=$username&un=$usernumber`
+	- `t`: The token from a GET request
+	- `user`: The username to delete
+	- `un`: The user's subnet number
+- **RESPONSE:** 
+	- `202`: Deleted
+	- `400`: Bad username or number
+	- `403`: Bad token
+	- `500`: Other server error