Hook up templating system to read the CHANGELOG for version and changelog info.
Modified nature.css to make it clearer on table headings/sub-headings. Use the
full _matrix/client path on title links to make it clear it is for v1.
Use 'x-example' to add examples to parameters which are not in 'body' (swagger
doesn't define that currently). Add profile API examples. Add necessary glue
and templates to make it all work.