file-based design-pattern to organize expressa & express REST/db middleware

Usage

	require('expressa-folder')(expressa, app)
	expressa.addListener('ready', 100, >(){
		expressa.folderDir = __dirname+"/lib"
		expressa.initFolder('foo')      // will require expressa db/REST-listener code if collection 'foo' exist
		expressa.initFolder('foo/bar')  // will setup custom express point
	})

This will automatically fetch the following files if present:

| file | expressa listener | creates express endpoint | note | | - | - | - | - | | lib/foo/get.js | yes | no | requires data/collection/foo.js to exist | | lib/foo/put.js | yes | no | requires data/collection/foo.js to exist | | lib/foo/delete.js | yes | no | requires data/collection/foo.js to exist | | lib/foo/schema.js | yes | no | requires data/collection/foo.js to exist | | lib/foo/functions.js | no | no | all db objects will inherit these functions | | lib/foo/bar/get.js | no | yes | |

Example: lib/foo/get.js

	module.exports = function(expressa, app){
		return function(req, collection, doc, resolve, reject) {
			// do stuff with the response data (doc)
			resolve(doc)
		})
	}

Example: lib/foo/functions.js

	module.exports = function(expressa, app){
		return {
			addPropertyFoo: () => {
				this.foo = "bar"
			}
		}
	}

Now you can easily access helper functions on the server:

expressa.db.foo.find({})
	.then( function(items){
		items.map( (i) => i.addPropertyFoo() )
	})

Example: lib/foo/bar/get.js

	module.exports = function(expressa,app){
		return function(req, res, next){
			res.end("foo")
		}
	}

Voila..this will automatically setup a 'foo/bar' express-endpoint