Fix: hasTimestamps.indexOf is not a function

Closes #5

Author: rchavik

src/delete.js

@@ -20,7 +20,8 @@ module.exports = function(req, res, urlPieces, model, config) {
 let result = {};
 result[model.idAttribute] = model.id;
 let promise = null;
-if(model.hasTimestamps.indexOf(config.deletedAttribute) >= 0 && (!req.hardDelete && !config.hardDelete || (req.hardDelete === false))) {
+let hasTimestamps = model.hasTimestamps || [];
+if(hasTimestamps.indexOf(config.deletedAttribute) >= 0 && (!req.hardDelete && !config.hardDelete || (req.hardDelete === false))) {
 let updatedData = {};
 updatedData[model.hasTimestamps[2]] = new Date();
 promise = model.save(updatedData, {method: 'update'})

src/get.js

@@ -8,7 +8,8 @@ module.exports = function(req, res, urlPieces, model, config) {
 }
 );
 
-if(model.hasTimestamps.indexOf(config.deletedAttribute) !== -1) {
+let hasTimestamps = model.hasTimestamps || [];
+if(hasTimestamps.indexOf(config.deletedAttribute) !== -1) {
 promise = promise.where(config.deletedAttribute, null);
 }