Added kwargs to extract() method
Added kwargs to extract() method

django-haystack/pysolr,mbeacom/pysolr,swistakm/pysolr,sandow-digital/pysolr-sandow,django-searchstack/skisolr,upayavira/pysolr,CANTUS-Project/pysolr-tornado,toastdriven/pysolr,django-searchstack/skisolr,mylanium/pysolr,rokaka/pysolr,10clouds/pysolr,swistakm/pysolr,django-haystack/pysolr,upayavira/pysolr,mbeacom/pysolr,shasha79/pysolr,CANTUS-Project/pysolr-tornado,mylanium/pysolr,toastdriven/pysolr,shasha79/pysolr,10clouds/pysolr,rokaka/pysolr