added call to update_handle when user==creator
added tests for hids_to handles
 added hids_to_handles
updated documentation on hids_to_handles about authentication (not implemented yet)
added hids_to_handles
added another test for hids_to_handles
Merge branch 'master' of https://github.com/brettin/handle_service
make hids_to_handles authless
Merge pull request #8 from MrCreosote/master

make hids_to_handles authless, merge in hids_to_handles