Don't load rcov tasks on heroku

lib/tasks/rcov.rake

@@ -1,24 +1,26 @@
-require 'cucumber/rake/task'
-require 'rspec/core/rake_task'
+unless Teambox.config.heroku?
+  require 'cucumber/rake/task'
+  require 'rspec/core/rake_task'
 
-namespace :rcov do
-  Cucumber::Rake::Task.new(:cucumber_run) do |t|
-    t.rcov = true
-    t.rcov_opts = %w{--rails --exclude osx\/objc,gems\/,spec\/,features\/ --aggregate coverage.data}
-    t.rcov_opts << %[-o "coverage"]
-  end
+  namespace :rcov do
+    Cucumber::Rake::Task.new(:cucumber_run) do |t|
+      t.rcov = true
+      t.rcov_opts = %w{--rails --exclude osx\/objc,gems\/,spec\/,features\/ --aggregate coverage.data}
+      t.rcov_opts << %[-o "coverage"]
+    end
 
-  RSpec::Core::RakeTask.new(:rspec_run) do |t|
-    t.pattern = 'spec/**/*_spec.rb'
-    t.rcov = true
-    t.rcov_opts = %w{--rails --exclude osx\/objc,gems\/,spec\/,features\/ --aggregate coverage.data}
-    t.rcov_opts << %[-o "coverage"]
-  end
+    RSpec::Core::RakeTask.new(:rspec_run) do |t|
+      t.pattern = 'spec/**/*_spec.rb'
+      t.rcov = true
+      t.rcov_opts = %w{--rails --exclude osx\/objc,gems\/,spec\/,features\/ --aggregate coverage.data}
+      t.rcov_opts << %[-o "coverage"]
+    end
 
-  desc "Run both specs and features to generate aggregated coverage"
-  task :all do |t|
-    rm "coverage.data" if File.exist?("coverage.data")
-    Rake::Task["rcov:cucumber_run"].invoke
-    Rake::Task["rcov:rspec_run"].invoke
+    desc "Run both specs and features to generate aggregated coverage"
+    task :all do |t|
+      rm "coverage.data" if File.exist?("coverage.data")
+      Rake::Task["rcov:cucumber_run"].invoke
+      Rake::Task["rcov:rspec_run"].invoke
+    end
   end
-end
+end