add one more task

lib/tasks/remove_branch.rake

@@ -0,0 +1,14 @@
+namespace :remove_branch do
+  desc "Remove branch for group projects"
+  task :group => :environment do
+    branch = ENV['BRANCH']
+    group = ENV['GROUP']
+    say "START remove branch #{branch} from #{group} group"
+    Group.find_by_uname(group).projects.find_each do |p|
+      next if p.repo.branches.map(&:name).exclude?(branch)
+      say "===== Process #{p.name} project"
+      p.repo.git.native(:branch, {}, '-D', branch)
+    end
+    say 'DONE'
+  end
+end