Set `knife[:berkshelf_path]` when generating knife.rb
Set `knife[:berkshelf_path]` when generating knife.rb

Fixes #239.

analog-analytics/knife-solo,analog-analytics/knife-solo,coletivoEITA/knife-solo,coletivoEITA/knife-solo,leonid-shevtsov/knife-solo,analog-analytics/knife-solo,a2ikm/knife-solo,chadzilla2080/knife-solo,matschaffer/knife-solo,chadzilla2080/knife-solo,matschaffer/knife-solo,a2ikm/knife-solo,a2ikm/knife-solo,leonid-shevtsov/knife-solo,chadzilla2080/knife-solo,matschaffer/knife-solo,leonid-shevtsov/knife-solo,coletivoEITA/knife-solo