spree extension generator: updated README.md
spree extension generator: updated README.md

azranel/spree,imella/spree,berkes/spree,dafontaine/spree,imella/spree,maybii/spree,azranel/spree,calvinl/spree,ayb/spree,vinsol/spree,siddharth28/spree,berkes/spree,siddharth28/spree,vinayvinsol/spree,calvinl/spree,azranel/spree,orenf/spree,gautamsawhney/spree,orenf/spree,azranel/spree,imella/spree,ayb/spree,calvinl/spree,jaspreet21anand/spree,maybii/spree,gautamsawhney/spree,orenf/spree,vinayvinsol/spree,maybii/spree,vinayvinsol/spree,vmatekole/spree,dafontaine/spree,DarkoP/spree,berkes/spree,ayb/spree,vinsol/spree,brchristian/spree,ayb/spree,jaspreet21anand/spree,vmatekole/spree,jaspreet21anand/spree,jaspreet21anand/spree,maybii/spree,brchristian/spree,gautamsawhney/spree,DarkoP/spree,brchristian/spree,vmatekole/spree,gautamsawhney/spree,dafontaine/spree,vinsol/spree,vmatekole/spree,calvinl/spree,brchristian/spree,vinayvinsol/spree,DarkoP/spree,vinsol/spree,siddharth28/spree,dafontaine/spree,orenf/spree,DarkoP/spree,berkes/spree,siddharth28/spree