Merge branch 'patch-1' of https://github.com/pietsch/rest-api-doc int…

…o pietsch-patch-1

deprecated/rest_api_koans.md

@@ -28,7 +28,7 @@ You might start by wondering how much and what kinds of data exist in the CrossR

### How many report DOIs does CrossRef have?

    http://api.crossref.org/types/journal-article/works?rows=0
    http://api.crossref.org/types/report/works?rows=0

But eventually you will probably want to start looking at metadata records