Imports of package handler

PathSynopsis
github.com/dgrijalva/jwt-goPackage jwt is a Go implementation of JSON Web Tokens: http://self-issued.info/docs/draft-jones-json-web-token.html
github.com/labstack/echoPackage echo implements high performance, minimalist Go web framework.
github.com/labstack/echo/cookbook/twitter/model
gopkg.in/mgo.v2Package mgo offers a rich MongoDB driver for Go.
gopkg.in/mgo.v2/bsonPackage bson is an implementation of the BSON specification for Go:
net/httpPackage http provides HTTP client and server implementations.
strconvPackage strconv implements conversions to and from string representations of basic data types.
timePackage time provides functionality for measuring and displaying time.