Add conditions

Update license

Merge pull request #6 from ferryproxy/dev

Update api

Use ferryproxy.io

Fix docs

Update api status

Merge pull request #4 from ferry-proxy/api-mapping-rule

Add api mapping rule

Merge pull request #3 from ferry-proxy/fix/omitempty

Update api

Merge pull request #2 from ferry-proxy/update-api

Update api

Update API