Adding scheduler.rake for heroku

Gemfile

@@ -36,7 +36,6 @@ gem 'jquery-rails'
 
 gem 'devise', '>= 2.0'
 gem 'whenever'
-gem "acts_as_list"
 gem 'web-app-theme', :git => 'https://github.com/pilu/web-app-theme.git'
 gem 'rails-backbone'
 gem 'heroku'

Gemfile.lock

@@ -36,7 +36,6 @@ GEM
     activesupport (3.2.1)
       i18n (~> 0.6)
       multi_json (~> 1.0)
-    acts_as_list (0.1.4)
     addressable (2.2.6)
     arel (3.0.0)
     bcrypt-ruby (3.0.1)
@@ -149,7 +148,6 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  acts_as_list
   coffee-rails (~> 3.2.1)
   devise (>= 2.0)
   heroku

lib/tasks/scheduler.rake

@@ -0,0 +1,6 @@
+desc "This task is called by the Heroku scheduler add-on"
+task :clear_done => :environment do
+    puts "Clearing users' completed daily tasks, and docking points for incompletes..."
+    Habit.clear_done
+    puts "done."
+end