Write feature file for viewing diffs as a side by side comparison
Add initial step definition
Add initial step definition
Write skeleton view for side by side comparison
Spec out added_file? method
Spec out deleted_file? method
Add diff method to step definition and refactor views
Spec out original_lines method
Spec out modified_lines method
Pass first side by side comparison feature
Refactor views to show side by side comparison
Add scenarios for new and deleted files
Force added/removed files to be visible