Added MongoDB config for example app
Added MongoDB config for example app

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