demonstrate complex constraint factoring
demonstrate complex constraint factoring

this expands the example a touch.  Also updated limit back to 2 for findOne  (@luislobo see https://github.com/balderdashy/waterline/blob/8fe117e41ca29265d0f00cd6c1601d8fd6e29857/lib/waterline/utils/query/forge-stage-two-query.js#L439-L454)
luislobo/waterline,balderdashy/waterline