Updated documentation again
Updated documentation again

to reflect env variables for heroku, and steps to remove config lines from production.js

cnwhy/ejs,zensh/ejs,insidewarehouse/ejs,rpaterson/ejs,zensh/ejs,insidewarehouse/ejs,jtsay362/solveforall-ejs2,operatino/ejs,kolonse/ejs,TimothyGu/ejs-tj,tyduptyler13/ejs,TimothyGu/ejs-tj,xanxiver/ejs,mde/ejs,cnwhy/ejs,kolonse/ejs,mmis1000/ejs-promise