Apply permissions on custom actions

[jatindergit]

Hi @yezyilomo

This is really a great package but how can I add groups and permissions on custom actions like:
'PATCH': {
'claim': {
'groups': 'any',
'permissions': ['configurations.claim_event']
}, 'unclaim': {
'groups': 'any',
'permissions': ['configurations.unclaim_event']
}
},

If I see your package files, you are only checking for
if view.action in ['list', 'retrieve']:

I think we should comment this condition