add https protocol supporting during rake setup_github_pages

Rakefile

@@ -305,9 +305,15 @@ task :setup_github_pages, :repo do |t, args|
   else
     puts "Enter the read/write url for your repository"
     puts "(For example, 'git@github.com:your_username/your_username.github.io)"
+    puts "           or 'https://github.com/your_username/your_username.github.io')"
     repo_url = get_stdin("Repository url: ")
   end
-  user = repo_url.match(/:([^\/]+)/)[1]
+  protocol = (repo_url.match(/(^git)@/).nil?) ? 'https' : 'git'
+  if protocol == 'git'
+    user = repo_url.match(/:([^\/]+)/)[1]
+  else
+    user = repo_url.match(/github\.com\/([^\/]+)/)[1]
+  end
   branch = (repo_url.match(/\/[\w-]+\.github\.(?:io|com)/).nil?) ? 'gh-pages' : 'master'
   project = (branch == 'gh-pages') ? repo_url.match(/\/([^\.]+)/)[1] : ''
   unless (`git remote -v` =~ /origin.+?octopress(?:\.git)?/).nil?