Better documentation or example on how to add params on an API request

[tennisonchan]

If you want to call a gist with a param, say a /gist request with a param since (api), you need to do as the following:

// GET /gists?since=2017-10-15T18:20:28
gists.all({
    since: "2017-10-15T18:20:28",
    params: ['since']
}, cb);

[jonschlinkert]

thanks! I'll add this to the docs after we get your pr merged