Add Learn React.js and ES6 section to README.md
Add Learn React.js and ES6 section to README.md

zedd45/react-static-todos,srossross-tableau/hackathon,RyanGosden/react-poll,koistya/react-static-boilerplate,kriasoft/react-static-boilerplate,jamesrf/weddingwebsite,raffidil/garnanain,kriasoft/react-static-boilerplate,gadflying/profileSite,kyoyadmoon/fuzzy-hw1,jamesrf/weddingwebsite,srossross-tableau/hackathon,leo60228/HouseRuler,gmorel/me,leo60228/HouseRuler,gadflying/profileSite,kyoyadmoon/fuzzy-hw1,gmorel/me,koistya/react-static-boilerplate,zedd45/react-static-todos,raffidil/garnanain,willchertoff/planner,RyanGosden/react-poll,willchertoff/planner