Fix for React-Native: parse responseText if responseXML is missing (#281)
Fix for React-Native: parse responseText if responseXML is missing (#281)

* Fix for React-Native: parse responseText if responseXML is missing

* If parser produced nothing, treat that as an error

damencho/strophejs,damencho/strophejs,damencho/strophejs,strophe/strophejs,strophe/strophejs,strophe/strophejs