renammed the pav matrix output file

main.py

@@ -92,7 +92,7 @@ if args.annotation | args.variation | args.alignment:
                 pav_output+="\t"+str(field)
             pav_output+="\n"
 
-        out_pav="pav_genes"
+        out_pav="PAV_matrix.txt"
         file_out_pav = open(out_pav, 'w')
         file_out_pav.write(pav_output)