Add a todo item to a list.
http://listflock.com/api-0.1/todos/add/
api_key (Required) : The api key of your application.
sk (Required) : 32 character string returned through the authentication process.
api_sig (Required) : Signature for the request as described in the authentication spec.
list_id (Required) : The id of the list you wish to add the todo item to.
name (Required) : The short name of the todo item.
details (Optional) : A longer paragraph relating the the todo.
This request must be be made using HTTP POST.
This request does require authentication
<api status="ok"> <todo> <id>17</id> <name>Pay for the paper</name> <details><![CDATA[Go down to the newsagents and pay for last weeks paper.]]></details> <list_id>4</list_id> <status>0</status> </todo> </api>