Use winston instead of npmlog

test/integration/app-test.js

@@ -5,7 +5,7 @@ const Mongo = require('../../src/dao/mongo');
 const nodemailer = require('nodemailer');
 const config = require('config');
 const fs = require('fs');
-const log = require('npmlog');
+const log = require('winston');
 
 describe('Koa App (HTTP Server) Integration Tests', function() {
   this.timeout(20000);

test/integration/mongo-test.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const log = require('npmlog');
+const log = require('winston');
 const config = require('config');
 const Mongo = require('../../src/dao/mongo');
 

test/integration/public-key-test.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const log = require('npmlog');
+const log = require('winston');
 const config = require('config');
 const nodemailer = require('nodemailer');
 const Email = require('../../src/email/email');

test/unit/email-test.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const log = require('npmlog');
+const log = require('winston');
 const Email = require('../../src/email/email');
 const nodemailer = require('nodemailer');
 

test/unit/pgp-test.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const fs = require('fs');
-const log = require('npmlog');
+const log = require('winston');
 const openpgp = require('openpgp');
 const PGP = require('../../src/service/pgp');