doc, chuck the old README and put a proper one in place

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
doc, add pronunciation section

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
doc, document RFC 5545 extensions

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
Merge branch 'doc/README'

* doc/README:
  doc, document RFC 5545 extensions
  doc, add pronunciation section
  doc, chuck the old README and put a proper one in place