by default the library supports `JQuery`, `vue-resource` and `axios` as ajax libraries.
If you wish to use a different library, or somehow alter the request (e.g add auth headers, or manipulate the data) use the `requestFunction` option. E.g:
options: {requestFunction(data) {return axios.get(this.url, {params: data}).catch(function (e) {this.dispatch('error', e);});}}
When using a custom request function, the `url` prop is not required.