Fix bug where value of noclean kwargs not respected
PEP8
Refactor ntuple cfg final state selection. Update docs.

Now we pass a list of desired final states as
a command line option.  Will allow cleanup of cfis.
Remove obsolete (very non-DRY) cfis for ntuple building
Clarify README title
Improve example documentation.
Fix dictionary bug spotted by Mauro - thanks dude
Merge pull request #156 from ekfriis/master

Cleanup ntuple generation cfis
Merge pull request #155 from mverzett/weightloss

Many updates from Mauro, fix bugs in PyROOT library loading.
Takes the roorealvar found in roovar_path in the root file file_path and build a function f(x): x/var