remove signale dependency

lib/install.js

@@ -1,7 +1,6 @@
 'use strict';
 
 const path = require('path');
-const signale = require('signale');
 const bin = require('.');
 
 function getProjectRoot() {
@@ -26,8 +25,8 @@ function getProjectRoot() {
 
 bin(getProjectRoot()).run(['version'])
   .then(() => {
-    signale.success('Hugo binary installed successfully!');
+    console.log('✔ Hugo installed successfully!');
   })
   .catch(error => {
-    signale.fatal(`${error.message}\nHugo binary installation failed!`);
+    console.error(error + '✖ ERROR: Hugo installation failed. :(');
   });