Depend on Spree 2.2.0.beta
Use right version of spree_sample
Bump selenium-webdriver to 2.35.1
Use Spree::Price to parse the credit value.

Fixes #56
Use Spree 2-2-stable
Change preference type from float to decimal

Fixes #57
Rename method load_order to load_order_with_lock

Fixes #59
Use 2-2-stable from spree/spree
Use pry for debugging
Bump selenium-webdriver to 2.39.0
Use right factory name in store_credits_spec
Remove duplicate version variable within Gemfile
Merge remote-tracking branch 'upstream/2-2-stable' into 2-2-stable

Conflicts:
	Gemfile
	app/controllers/spree/checkout_controller_decorator.rb
	app/models/spree/app_configuration_decorator.rb
	spree_store_credits.gemspec