- added reference implementation section 1.2

- added URI overview table
- minor fixes
- prepare for pandoc TOC support
- Updated README.md
 - avoid build failure due to missing license header in generated spec html file using pandoc template.
 - fixed line lengths in PDF files (GitHub markdown linebreak behavior differs from all other MarkDown flavors)
 - removed escape chars.
Merge pull request #355 from robertoschwald/CAS-1284

[CAS 1284] Validate and adopt CAS3 protocol rev
Merge branch 'master' into CAS-1410

Conflicts:
	cas-server-protocol/3.0/cas_protocol_3_0.html
	cas-server-protocol/3.0/cas_protocol_3_0.pdf
CAS-1410: Regenerated html/pdf templates