added some query docs to model
added some query docs to model

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