Merge pull request #1 from padenis/master

minor edit to README.md
Slightly reformat authors list
Tidy up MST decoder a little bit
Remove unused experiment module
attelo evaluate: machine readable output (json)
Move install requirements to setup.py
Flesh the README out with some extra context
Cut pandocisms
Move authors list down a bit
Steer people away from attelo.harness

The name seems to be tempting/confusing
It's unfortunate
Break attelo.harness up into pieces

Each command gets its own module.
Share utility functions get split into thematic submodules.

Along the way I also switched to Python 3 print functions.
And refactored some save document code in the evaluate commmand
Tidy up a smidgen
Fix print statement
Remove annodis relnb convention in output

That's just going to confuse people for no good.
It's not even clear that we use it in Annodis.
Fix type error in reporting (function vs app)
Fix print misdirection
Fix string concatenation syntax.

I was making a bunch of meaningless string statements.
This would have been caught by pylint except that I
disabled it because it was useful for docstrings.
Rename attelo.fileNfold to attelo.fold and tidy up

Slightly clearer function names.
pep8 and pylint
Require --config
variant of common args without rels