add function to retrieve jwt from requests

src/libs/middlewares/passport.js

 const JwtStrategy = require('passport-jwt').Strategy;
+const ExtractJwt = require('passport-jwt').ExtractJwt;
 const libs = `${process.cwd()}/libs`;
 const config = require(`${libs}/config`);
 const User = ('../models/user');
 
 module.exports = function(passport){
   var opts = {};
+  opts.jwtFromRequest = ExtractJwt.fromAuthHeader();
   opts.secretOrKey = config.get('mongodb:secret');
   passport.use(new JwtStrategy(opts, function(jwt_payload, done){
     User.find({id: jwt_payload.id}, function(err, user){
@@ -12,13 +14,13 @@ module.exports = function(passport){
           return done(err);
       }
 
-       if (!user) {
-           return done(null, false, {message: 'Unknown user'});
-       }
+      if (!user) {
+          return done(null, false, {message: 'Unknown user'});
+      }
 
-       if (!user.comparePassword(password)) {
-           return done(null, false, {message: 'Invalid password'});
-       }
+      if (!user.comparePassword(password)) {
+          return done(null, false, {message: 'Invalid password'});
+      }
 
        return done(null, user);
     });