Clarifying name and use of React env config.
Clarifying name and use of React env config.

1. "GLOBALS" is ambiguous, particularly since its only use is to configure the React environment. I don't really see a reason to abstract this at all, as opposed to just inlining the object in the call to `webpack.DefinePlugin`.

2. Clarified the comment on line 25 to indicate that the statement before it sets the build to either mode, not just prod.

Note: There should probably be a comment on line 6 to explain the need to `JSON.stringify` a string. I'm not sure of the reason, so I couldn't add the comment myself.
oshalygin/react-slingshot,danpersa/remindmetolive-react,lisavogtsf/canned-react-slingshot-app,coryhouse/react-slingshot,oded-soffrin/gkm_viewer,ronstarcool/pf,kpuno/survey-app,waneka/codenames,BenMGilman/react-lunch-and-learn,sadasystems/react-slingshot,AurimasSk/DemoStore,barbel840113/testapp,luanatsainsburys/road-runner,danpersa/remindmetolive-react,svitekpavel/Conway-s-Game-of-Life,MouseZero/nightlife-frontend,ronstarcool/pf,seantcoyote/react-slingshot-bones,akataz/theSite,svitekpavel/chatbot-website,svitekpavel/chatbot-website,aaronholmes/yelp-clone,MouseZero/nightlife-frontend,garusis/up-designer,git-okuzenko/react-redux,PatrickHai/react-client-changers,BenMGilman/react-lunch-and-learn,danpersa/remindmetolive-react,oshalygin/react-slingshot,flibertigibet/react-redux-starter-kit-custom,oded-soffrin/gkm_viewer,coryhouse/react-slingshot,codenamekt/reactive-boiler,kpuno/survey-app,svitekpavel/Conway-s-Game-of-Life,sadasystems/react-slingshot,barbel840113/testapp,garusis/up-designer,flibertigibet/react-redux-starter-kit-custom,lisavogtsf/canned-react-slingshot-app,seantcoyote/react-slingshot-bones,Nevraeka/cfx-prerender,luanatsainsburys/road-runner,PatrickHai/react-client-changers,git-okuzenko/react-redux,waneka/codenames,AurimasSk/DemoStore,codenamekt/reactive-boiler,Nevraeka/cfx-prerender,waneka/codenames,akataz/theSite,aaronholmes/yelp-clone