Add ability to search conjur and return full json resources

[AndrewCopeland]

Currently client.list() returns all resource ids the client has access too.
I would like to get a list of resources according to the list resources endpoint.

returning a list of dicts I think is fine for now. While doing this we should create another client method named client.search(kind, search) so we can search for specific kinds and words within our resource. This can be done in the ruby conjur-cli using the command conjur list -k variable -s word.