Major file movement
Fix specs after renaming
Fix naming of Diff::Helpers
Back to green!
Abstract class handling in Diff

No direct reference to Treebank needed
Fix naming error for Diff#to_xml root node
Fix Sinatra routes
Better use instance_of? and not kind_of?
Merge pull request #15 from latin-language-toolkit/renaming_and_abstractions

Renaming and abstractions