Publishing a website generated by nanoc to Github

gistfile1.rb

require 'nanoc3/tasks'

desc "Publish site to Github"
task :publish do
 src = 'output/'
 dst = 'username.github.com/'

 puts '==== Syncing working directory...'
 sh("rsync -arv --delete --exclude '.git' #{src} #{dst}")
 
 puts '==== Commiting changed files'
 sh("cd #{dst}; git add -A")
 
 commit_message = "Update website: " + Time.now
 sh("cd #{dst}; git commit -m '#{commit_message}'")

 puts '==== Pushing changes to Github'
 sh("cd #{dst}; git push")

 puts '==== Published website to Github'

end