rest-api: update to clarify access/input/output

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
rest-api: Add operation wait

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
rest-api: Add profiles API

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
rest-api: Fix markdown a bit

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Merge pull request #51 from stgraber/master

Update REST API