model/mongo.js
function (soajs, combo, cb) {
		checkForMongo(soajs);
		mongo.findOne(combo.collection, combo.condition || {}, combo.fields || null, combo.options || null, cb);
	}
function (soajs, combo, cb) {
		checkForMongo(soajs);
		mongo.findOne(combo.collection, combo.condition || {}, combo.fields || null, combo.options || null, cb);
	}
Find one entry based on a condition
@param {SOAJS Object} soajs
@param {Object} combo
@param {Callback Function} cb