Update README with clear explanation of transaction db handle
Update README with clear explanation of transaction db handle

kimiby/gorm,ivpusic/gorm,trigrass2/gorm,NOX73/gorm,awakenetworks/gorm,jmptrader/gorm,gernest/ngorm,pariz/gorm,d4l3k/gorm,ulule/gorm,lscieux/gorm,jaytaylor/gorm,trigrass2/gorm,andviro/gorm,ch3lo/gorm,aperera/gorm,armiller/gorm,ulule/gorm,arthurpro/gorm,arthurpro/gorm,sdhjl2000/gorm,unravelin/gorm,Twister915/gorm,bpizzi/gorm,andviro/gorm,sulnedinfind/gorm,sulnedinfind/gorm,aspcartman/gorm,postmates/gorm,sidorenko-ruslan/gorm,senseobservationsystems/gorm,Acidburn0zzz/gorm,sunfmin/gorm,seatgeek/gorm,ModelRocket/gorm,kiwih/gorm,ilgooz/gorm,senseobservationsystems/gorm,d4l3k/gorm,KevinSjoberg/gorm,ivpusic/gorm,OscaRoa/gorm,kimiby/gorm,aspcartman/gorm,sunfmin/gorm,NOX73/gorm,jmptrader/gorm,yibin001/gorm,seatgeek/gorm,lscieux/gorm,wallclockbuilder/gorm,awakenetworks/gorm,javierprovecho/gorm,nkovacs/gorm,acdgfh/gorm,acdgfh/gorm,unravelin/gorm,bpizzi/gorm,ilgooz/gorm,kiwih/gorm,jinzhu/gorm,yibin001/gorm,nkovacs/gorm,armiller/gorm,wallclockbuilder/gorm,Acidburn0zzz/gorm,jinzhu/gorm,ngorm/ngorm,OscaRoa/gorm,sdhjl2000/gorm,aperera/gorm,jaytaylor/gorm,pariz/gorm,Twister915/gorm,sidorenko-ruslan/gorm,postmates/gorm,KevinSjoberg/gorm,liudanking/gorm,liudanking/gorm,ModelRocket/gorm,ch3lo/gorm,javierprovecho/gorm