Merge pull request #3 from kikupon/master

Master
Introduce mongodb and created User model
Merge pull request #4 from kyaukyuai/master

Master
Refactor and add some test code
Refactor and add test codes
Remove old file
Add gem configuration for crawler
Impliment clawler part
Merge remote-tracking branch 'origin/master' into develop

Conflicts:
	Gemfile.lock
	config/database.yml
	lib/shokupon_api.rb
Merge pull request #3 from kikupon/develop

merge