Issue #234 initial attempt to add 3.0 alpha documentation directly to github pages website.
Revert "Issue #234 initial attempt to add 3.0 alpha documentation directly to github pages website."

This reverts commit 1369f01c25f31419b156a5a1b8f6838dafaa179c.
Remove CNAME file with invalid content.
Issue #234 Upload generated documentation to replace web pages.

Another attempt by myself after Andrew reported problems and further changes to the documentation.
Issue #234 Disable Jekyll by adding .nojekyll file.
Upload re-generated web pages with improved installation instructions and other minor changes.
Upload overview page with new title "Overview".
Update links to point to GitHub hosted pages instead of SBIA. Directory structure has slightly changed. Updated PDF for download.
Update online content by more recent version of feature/docUsability branch (commit 6233ae3).
Update online content by more recent version of feature/docUsability branch (commit a59b141).
Upload documentation generated from feature/docUsability branch (commit 6aefa8b).
Upload documentation generated from feature/docUsability branch (commit 3eee6d7).
Replace index by updated version without "orphan:" mistake.
Update to documentation generated from feature/docUsability branch (commit 3286934).
Update to documentation generated from feature/docUsability branch (commit cdd3c05).
Update to documentation of feature/docUsability commit 07bb0d1.
Update to documentation generated from feature/docUsability branch (commit fa78cb3).
Update to documentation generated from feature/docUsability branch (commit 9462209).
Update to documentation generated from feature/docUsability branch (commit 82e9b15).
Generated from feature/docUsability branch commit 95373d1.