append ? and queryparams only if queryparams. allows for passing {} into toFragment for route reversing.
append ? and queryparams only if queryparams. allows for passing {} into toFragment for route reversing.

opsmanager/backbone-query-parameters,jhudson8/backbone-query-parameters,opsmanager/backbone-query-parameters,jblotus/backbone-query-parameters,jblotus/backbone-query-parameters,jhudson8/backbone-query-parameters