Imports github.com/globalsign/mgo github.com/globalsign/mgo/bson github.com/gorilla/mux github.com/shurcooL/github_flavored_markdown github.com/shurcooL/github_flavored_markdown/gfmstyle github.com/sirupsen/logrus github.com/urfave/negroni Standard library imports crypto/md5 encoding/json errors fmt io/ioutil net/http os regexp strconv sync sync/atomic time