List customers with sorting and filtering

[joshsadler]

Related to #99

For customer management, it'd be useful to extend the functionality of the GET /customers endpoint.

Consider having GET /customers return a paginated list of results. My immediate need is for the sort order to be by date created.

For any paginated response, it's useful to know when you've hit the end of the series by either having the total count in the response or a marker on the response to signal the end.

We could do this in all sorts of ways, but typical REST might be something like

GET /customers?orderBy=createdAt&orderDirection=desc&limitTo=50

Also related, filtering the list of customers by status and createdAt (before or after), would be a solid start.

[adamdecaf]

@jmbrown412 can we include a filter for type that returns only individual or business Customers if specified. It was on #99 but I don't think we've gotten to it yet.

[jmbrown412]

This isn't done but I can prioritize that tomorrow first thing. Should be quick to do.

[jmbrown412]

This isn't done but I can prioritize that tomorrow first thing. Should be quick to do.

This was just merged. You can search for customers by type now.
Examples:
?type=individual
?type=business