Merge pull request colinta#60 from burtbeckwith/patch-1

Bug fix for unnamed view

Fix Issue colinta#55

Merge pull request colinta#57 from clarkewd/preventConsoleFromPoppingUp

Fixes colinta#19 - Prevent console from popping up

fixes dup entries in 'diff file with file in project'

fixes 'Diff with previous window'

license update

limit 'compare to files in project' to 1000 files (settings: 'limit')

move 'options' to 'run_diff' method

added 'cmd' argument support, so you can assign an external editor us…

…ing kwargs instead of settings

updated README and fixed whitespace