modify .gitignore
add ancestry gem for nested resources. Migrate db
remove validation requiring that 'description' have content
create spec for nested tasks
nested tasks can be created
resolve merge conflict in db/schema.rb
add bootstrap and create layout elements
Merge branch 'master' of github.com:irissilvermoon/Taskio into users

Conflicts:
	Gemfile.lock
	app/controllers/tasks_controller.rb
	app/models/task.rb
	app/views/layouts/application.html.erb
	app/views/tasks/show.html.erb
	db/schema.rb
	spec/integration/creating_tasks_spec.rb
	spec/support/factories/task_factory.rb