Merge pull request #2 from tony612/add-user

Add user
add plan model
generate plans controller
add plans pages
add plan_count to sidebar
Merge pull request #3 from tony612/add-plan

Add plan
generate customer using scaffold
add customer pages
add datepicker and angular-strap
fix the plan form error
change time zone to Beijing
Merge pull request #4 from tony612/add-customer

Add customer
inject resource
merge master and fix conflict