Align the tutorial to the recommended way to get objects from TFiles
Align the tutorial to the recommended way to get objects from TFiles

thanks Philippe :)

georgtroska/root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,georgtroska/root,agarciamontoro/root,nilqed/root,vukasinmilosevic/root,olifre/root,sbinet/cxx-root,0x0all/ROOT,abhinavmoudgil95/root,mkret2/root,agarciamontoro/root,beniz/root,perovic/root,abhinavmoudgil95/root,nilqed/root,abhinavmoudgil95/root,gbitzes/root,lgiommi/root,perovic/root,krafczyk/root,mhuwiler/rootauto,omazapa/root,nilqed/root,veprbl/root,arch1tect0r/root,BerserkerTroll/root,Duraznos/root,root-mirror/root,zzxuanyuan/root,beniz/root,omazapa/root-old,perovic/root,arch1tect0r/root,pspe/root,simonpf/root,abhinavmoudgil95/root,mattkretz/root,jrtomps/root,nilqed/root,CristinaCristescu/root,esakellari/root,0x0all/ROOT,jrtomps/root,bbockelm/root,Y--/root,Duraznos/root,omazapa/root-old,esakellari/my_root_for_test,arch1tect0r/root,pspe/root,thomaskeck/root,omazapa/root,davidlt/root,sawenzel/root,0x0all/ROOT,gbitzes/root,mattkretz/root,sawenzel/root,abhinavmoudgil95/root,bbockelm/root,simonpf/root,krafczyk/root,arch1tect0r/root,satyarth934/root,esakellari/root,mhuwiler/rootauto,krafczyk/root,omazapa/root-old,nilqed/root,omazapa/root,simonpf/root,krafczyk/root,karies/root,mhuwiler/rootauto,mkret2/root,georgtroska/root,lgiommi/root,mattkretz/root,buuck/root,nilqed/root,root-mirror/root,simonpf/root,esakellari/my_root_for_test,BerserkerTroll/root,mhuwiler/rootauto,Y--/root,omazapa/root-old,gbitzes/root,davidlt/root,beniz/root,root-mirror/root,sirinath/root,esakellari/root,sirinath/root,veprbl/root,zzxuanyuan/root,sawenzel/root,mattkretz/root,zzxuanyuan/root-compressor-dummy,mkret2/root,evgeny-boger/root,sirinath/root,sbinet/cxx-root,satyarth934/root,sirinath/root,omazapa/root-old,pspe/root,satyarth934/root,omazapa/root,sawenzel/root,georgtroska/root,Y--/root,dfunke/root,omazapa/root,sawenzel/root,agarciamontoro/root,olifre/root,esakellari/root,lgiommi/root,perovic/root,thomaskeck/root,evgeny-boger/root,bbockelm/root,bbockelm/root,karies/root,karies/root,karies/root,BerserkerTroll/root,omazapa/root-old,davidlt/root,Y--/root,lgiommi/root,zzxuanyuan/root,sirinath/root,buuck/root,thomaskeck/root,vukasinmilosevic/root,gganis/root,sbinet/cxx-root,sawenzel/root,sbinet/cxx-root,krafczyk/root,mkret2/root,BerserkerTroll/root,satyarth934/root,gbitzes/root,veprbl/root,sirinath/root,mattkretz/root,Y--/root,zzxuanyuan/root-compressor-dummy,abhinavmoudgil95/root,buuck/root,sbinet/cxx-root,pspe/root,davidlt/root,pspe/root,Y--/root,olifre/root,jrtomps/root,karies/root,BerserkerTroll/root,esakellari/root,BerserkerTroll/root,zzxuanyuan/root-compressor-dummy,esakellari/my_root_for_test,0x0all/ROOT,gganis/root,vukasinmilosevic/root,0x0all/ROOT,mkret2/root,veprbl/root,veprbl/root,simonpf/root,dfunke/root,satyarth934/root,pspe/root,esakellari/root,gganis/root,esakellari/root,olifre/root,buuck/root,karies/root,esakellari/my_root_for_test,gbitzes/root,omazapa/root-old,davidlt/root,beniz/root,esakellari/root,georgtroska/root,gbitzes/root,root-mirror/root,0x0all/ROOT,CristinaCristescu/root,esakellari/my_root_for_test,pspe/root,karies/root,sbinet/cxx-root,vukasinmilosevic/root,davidlt/root,gganis/root,beniz/root,olifre/root,BerserkerTroll/root,olifre/root,root-mirror/root,buuck/root,zzxuanyuan/root,zzxuanyuan/root,0x0all/ROOT,lgiommi/root,Duraznos/root,simonpf/root,vukasinmilosevic/root,evgeny-boger/root,jrtomps/root,krafczyk/root,omazapa/root-old,evgeny-boger/root,veprbl/root,gbitzes/root,smarinac/root,evgeny-boger/root,arch1tect0r/root,root-mirror/root,perovic/root,smarinac/root,pspe/root,mattkretz/root,satyarth934/root,Duraznos/root,zzxuanyuan/root,Duraznos/root,lgiommi/root,BerserkerTroll/root,zzxuanyuan/root,veprbl/root,perovic/root,simonpf/root,evgeny-boger/root,Duraznos/root,beniz/root,gganis/root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,jrtomps/root,simonpf/root,Duraznos/root,smarinac/root,smarinac/root,arch1tect0r/root,buuck/root,Duraznos/root,evgeny-boger/root,davidlt/root,vukasinmilosevic/root,sirinath/root,mkret2/root,Duraznos/root,CristinaCristescu/root,sbinet/cxx-root,evgeny-boger/root,gbitzes/root,mhuwiler/rootauto,vukasinmilosevic/root,esakellari/my_root_for_test,thomaskeck/root,krafczyk/root,lgiommi/root,arch1tect0r/root,veprbl/root,sbinet/cxx-root,mkret2/root,olifre/root,sawenzel/root,lgiommi/root,sbinet/cxx-root,lgiommi/root,root-mirror/root,evgeny-boger/root,nilqed/root,esakellari/my_root_for_test,mattkretz/root,dfunke/root,krafczyk/root,agarciamontoro/root,arch1tect0r/root,pspe/root,zzxuanyuan/root-compressor-dummy,zzxuanyuan/root-compressor-dummy,BerserkerTroll/root,omazapa/root-old,mhuwiler/rootauto,CristinaCristescu/root,sawenzel/root,dfunke/root,dfunke/root,dfunke/root,esakellari/root,krafczyk/root,bbockelm/root,satyarth934/root,dfunke/root,arch1tect0r/root,mhuwiler/rootauto,sawenzel/root,thomaskeck/root,georgtroska/root,gganis/root,esakellari/my_root_for_test,karies/root,vukasinmilosevic/root,beniz/root,karies/root,gganis/root,davidlt/root,veprbl/root,sawenzel/root,karies/root,buuck/root,davidlt/root,dfunke/root,esakellari/root,jrtomps/root,vukasinmilosevic/root,pspe/root,jrtomps/root,agarciamontoro/root,BerserkerTroll/root,smarinac/root,vukasinmilosevic/root,agarciamontoro/root,perovic/root,CristinaCristescu/root,gbitzes/root,zzxuanyuan/root-compressor-dummy,Y--/root,gganis/root,sirinath/root,agarciamontoro/root,satyarth934/root,CristinaCristescu/root,smarinac/root,abhinavmoudgil95/root,buuck/root,bbockelm/root,Y--/root,olifre/root,zzxuanyuan/root,georgtroska/root,simonpf/root,zzxuanyuan/root,davidlt/root,sbinet/cxx-root,beniz/root,root-mirror/root,omazapa/root,CristinaCristescu/root,bbockelm/root,smarinac/root,agarciamontoro/root,omazapa/root-old,olifre/root,CristinaCristescu/root,gganis/root,veprbl/root,abhinavmoudgil95/root,arch1tect0r/root,zzxuanyuan/root,smarinac/root,0x0all/ROOT,omazapa/root,perovic/root,karies/root,buuck/root,perovic/root,root-mirror/root,evgeny-boger/root,mhuwiler/rootauto,mkret2/root,dfunke/root,jrtomps/root,krafczyk/root,CristinaCristescu/root,esakellari/root,vukasinmilosevic/root,beniz/root,mattkretz/root,davidlt/root,simonpf/root,nilqed/root,zzxuanyuan/root-compressor-dummy,BerserkerTroll/root,pspe/root,satyarth934/root,dfunke/root,mkret2/root,satyarth934/root,mattkretz/root,thomaskeck/root,mhuwiler/rootauto,krafczyk/root,agarciamontoro/root,CristinaCristescu/root,jrtomps/root,beniz/root,mattkretz/root,Duraznos/root,mhuwiler/rootauto,gbitzes/root,gbitzes/root,root-mirror/root,zzxuanyuan/root-compressor-dummy,sirinath/root,bbockelm/root,satyarth934/root,omazapa/root-old,esakellari/my_root_for_test,abhinavmoudgil95/root,gganis/root,omazapa/root,zzxuanyuan/root,georgtroska/root,gganis/root,0x0all/ROOT,buuck/root,smarinac/root,agarciamontoro/root,perovic/root,Y--/root,arch1tect0r/root,Y--/root,omazapa/root,georgtroska/root,Duraznos/root,dfunke/root,nilqed/root,olifre/root,buuck/root,evgeny-boger/root,sawenzel/root,veprbl/root,agarciamontoro/root,mhuwiler/rootauto,jrtomps/root,mkret2/root,nilqed/root,sirinath/root,mkret2/root,CristinaCristescu/root,perovic/root,bbockelm/root,jrtomps/root,bbockelm/root,zzxuanyuan/root,simonpf/root,lgiommi/root,lgiommi/root,nilqed/root,olifre/root,omazapa/root,beniz/root,georgtroska/root,thomaskeck/root,abhinavmoudgil95/root,abhinavmoudgil95/root,bbockelm/root,root-mirror/root,omazapa/root,Y--/root,sbinet/cxx-root,mattkretz/root,esakellari/my_root_for_test,zzxuanyuan/root-compressor-dummy,thomaskeck/root,smarinac/root,sirinath/root,georgtroska/root