fixed markdown issue and promises .then() issue
fixed markdown issue and promises .then() issue

Added spacing to properly markdown Mongoose Cheatsheet. Also added missing closing brace from Promises .then() example.
awarn/cashier-analytics,ReadingPlus/flog,ericmreid/pingypong,quazar11/portfolio,awarn/cashier-analytics,sahat/hackathon-starter,vymarkov/hackathon-starter,vymarkov/hackathon-starter,sahat/hackathon-starter,ReadingPlus/flog,ericmreid/pingypong,devneel/spitsomebars,peterblazejewicz/hackathon-starter,JessedeGit/vegtable,quazar11/portfolio,ak-zul/hackathon-starter,niallobrien/hackathon-starter-plus,niallobrien/hackathon-starter-plus,ak-zul/hackathon-starter,devneel/spitsomebars,peterblazejewicz/hackathon-starter,sahat/hackathon-starter,peterblazejewicz/hackathon-starter,JessedeGit/vegtable