add `popToRootWebViewController ` method for popping nav controller of web view to root
add `popToRootWebViewController ` method for popping nav controller of web view to root

Electrode-iOS/ELHybridWeb,TheHolyGrail/Zoot,kuruvilla6970/Zoot,TheHolyGrail/Zoot,kuruvilla6970/Zoot,kuruvilla6970/Zoot,Electrode-iOS/ELHybridWeb