Merge pull request #1 from tkuhn/master

great comments from Tobias!
fix urls in the schema example

HTML escape < and >.
Added conformance section
Merge pull request #2 from zuotian/master

URLs in the shema example are not shown + conformance section missing
Update biblio.js

apparently <section id="conformance"> requires RFC2119 citation
Update index.html

trigger regeneration by this edit