add customer_category count
add plan setting model
add bootstrap-select
add some images
add bootstrap-select to application.css
use jbuilder to format the json
add CustomerCategories to PlanNewCtrl
build plan and customer many-to-many relationship
add customer category to plan edit page
build retionship with customer after creating plan
show customer categories in index page
inject customer categories to plan editing
fix the customer category bug in new plan page
change customer_categories to ids in plan show json
delete some useless js files
Merge pull request #8 from tony612/build-relationship-between-plan-and-customer

Build relationship between plan and customer