fix optional parameters and implement callbacks
fix optional parameters and implement callbacks

danwilson/google-analytics-plugin,IWAtech/google-analytics-plugin,felquis/google-analytics-plugin,sangwonl/google-analytics-plugin,josemedaglia/google-analytics-plugin,RangerRick/google-analytics-plugin,bcalvez/google-analytics-plugin,josemedaglia/google-analytics-plugin,bensonjs/google-analytics-plugin,dwmkerr/google-analytics-plugin,bluebile/google-analytics-plugin,ramirogm/google-analytics-plugin,Anu2g/google-analytics-plugin,Jerome2606/google-analytics-plugin,Knotis/google-analytics-plugin,dpolivy/google-analytics-plugin,cdbconcepts/google-analytics-plugin,Knotis/google-analytics-plugin,sangwonl/google-analytics-plugin,ramirogm/google-analytics-plugin,dwmkerr/google-analytics-plugin,Knotis/google-analytics-plugin,bluebile/google-analytics-plugin,qwemaze/google-analytics-plugin,QuantumRand/google-analytics-plugin,makinacorpus/google-analytics-plugin,bensonjs/google-analytics-plugin,QuantumRand/google-analytics-plugin,makinacorpus/google-analytics-plugin,bcalvez/google-analytics-plugin,ramirogm/google-analytics-plugin,danwilson/google-analytics-plugin,ugosan/google-analytics-plugin,shoutem/google-analytics-plugin,Anu2g/google-analytics-plugin,johnvandeweghe/google-analytics-plugin,mukundmr/google-analytics-plugin,felquis/google-analytics-plugin,RangerRick/google-analytics-plugin,Sweazer/google-analytics-plugin,cdbconcepts/google-analytics-plugin,MCRayRay/google-analytics-plugin,shoutem/google-analytics-plugin,Anu2g/google-analytics-plugin,dpolivy/google-analytics-plugin,en-japan/google-analytics-plugin,sportstech/google-analytics-plugin,Sweazer/google-analytics-plugin,johnvandeweghe/google-analytics-plugin,mukundmr/google-analytics-plugin,ugosan/google-analytics-plugin,joosu/google-analytics-plugin,sportstech/google-analytics-plugin,dpolivy/google-analytics-plugin,danwilson/google-analytics-plugin,MCRayRay/google-analytics-plugin,Jerome2606/google-analytics-plugin,joosu/google-analytics-plugin,IWAtech/google-analytics-plugin,en-japan/google-analytics-plugin,qwemaze/google-analytics-plugin