chore(package): update babel-preset-es2015 to version 6.9.0
chore(package): update babel-preset-es2015 to version 6.9.0

https://greenkeeper.io/
hairmot/REACTModuleTest,scottjbarr/companies-ui,brz0/chart-suite,alicoding/react-webpack-babel,BlackCloudConcepts/geolocLang-react-simple,roytang121/oled-visual,krystalcampioni/krystalcampioni-portfolio,tylerhq/react-fifteen,grohaus/schism-ecce-client,krystalcampioni/krystalcampioni-portfolio,roytang121/oled-visual,Nekimola/react-training,scaphold-io/slackr-graphql-subscriptions-starter-kit,BlackCloudConcepts/geolocLang-react-simple,teemuteemu/sp_modular,brz0/chart-suite,teemuteemu/sp_modular,liranhershko/intSights,roytang121/oled-visual,annaboodle/buddies,grohaus/schism-ecce-client,scaphold-io/slackr-graphql-subscriptions-starter-kit,tylerhq/react-fifteen,SodhanaLibrary/react-examples,alicoding/react-webpack-babel,hairmot/REACTModuleTest,SodhanaLibrary/react-examples,liranhershko/intSights,annaboodle/buddies,donghee214/pathway,donghee214/pathway,kjhwee91/react-c3js,Nekimola/react-training,scottjbarr/companies-ui