chore(*): upgrade bin-wrapper (#64)

lib/install.js

@@ -1,11 +1,11 @@
 const bin = require('./');
 const log = require('logalot');
 
-bin.run(['version'], err => {
-  if (err) {
-    log.error(err.message);
-    log.error('Hugo binary installation failed');
-    return;
-  }
+bin.run(['version'])
+.then(() => {
   log.success('Hugo binary is installed successfully');
+})
+.catch(err => {
+  log.error(err.message);
+  log.error('Hugo binary installation failed');
 });

package.json

@@ -11,7 +11,7 @@
     "hugo": "cli.js"
   },
   "dependencies": {
-    "bin-wrapper": "3.0.2",
+    "bin-wrapper": "4.0.0",
     "del-cli": "1.1.0",
     "logalot": "2.1.0"
   },