User name

[AugustT]

The function that returns user information does not return the name of the user:

https://github.com/nfox29/photosearcher/blob/d298a5539e2b336da43db9fdb3db5a84a24e506d/R/user_info.R#L35

This would be useful because many of the image licenses require the user to be attributed. As it stands there is no way to get the user's names and so attributions is very difficult.