Updated documentation again
Updated documentation again

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

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