Added rake task to execute every rake task for every foodcoop.

lib/tasks/multicoops.rake

@@ -0,0 +1,12 @@
+namespace :multicoops do
+
+  desc 'Runs a specific rake task for each registered foodcoop, use rake multicoops:run db:migrate'
+  task :run => :environment do
+    task_to_run = ARGV[1]
+    FoodsoftConfig.each_coop do |coop|
+      puts "Run '#{task_to_run}' for #{coop}"
+      Rake::Task[task_to_run].invoke
+    end
+  end
+
+end