Rewrite README
New CHANGES file

Move changes out of documentation into top-level file.  Rationale:
changes intended for releases/quick reference, and isn't documentation
per se.
Add dependencies section to readme
Add link for Python in readme
Rewrite intro of docs
Delete MANIFEST.in

Source should be packaged/distributed in a different way, not using
python distutils...
Remove hard links tutorial

If a user needs this, they shouldn't be using dantalian
Combine tutorial and guides
Rewrite user guide message
Add examples placeholder
Revise manpage
Populate examples with some examples for now
Add documentation building info to README
Capitalize Dantalian in doc config
Work on user documentation
Merge branch 'manpage' into redo-docs
Work on user documentation
Write commands reference
Work on user documentation
Update user documentation