diff --git a/lib/.jshintrc b/lib/.jshintrc
new file mode 100644
index 0000000..42f6123
--- /dev/null
+++ b/lib/.jshintrc
@@ -0,0 +1,6 @@
+{
+  "extends": "../.jshintrc",
+  "browser": false,
+  "jquery": false,
+  "node": true
+}
diff --git a/lib/npm/postInstall.js b/lib/npm/postInstall.js
index d78c5fb..1aaa803 100644
--- a/lib/npm/postInstall.js
+++ b/lib/npm/postInstall.js
@@ -2,46 +2,48 @@
   'use strict';
 
   var
-    less = require('less'),
+    less               = require('less'),
     LessPluginCleanCSS = require('less-plugin-clean-css'),
-    fs = require('fs-extra'),
-    path = require('path'),
-    async = require('async'),
-    cleanCSSPlugin = new LessPluginCleanCSS({advanced: true, 'clean-css': '-s0'}),
-    source = '@import "./less/main.less";'
-    ;
+    fs                 = require('fs-extra'),
+    path               = require('path'),
+    async              = require('async'),
+    cleanCSSPlugin     = new LessPluginCleanCSS({advanced: true, 'clean-css': '-s0'}),
+    source             = '@import "./less/main.less";'
+  ;
 
-  const NPM_FONTS_PATH = './node_modules/font-awesome/fonts',
-    PUBLIC_FONTS_PATH = './public/fonts',
-    PUBLIC_CSS_PATH = './public/css/main.min.css'
-    ;
+  var NPM_FONTS_PATH    = './node_modules/font-awesome/fonts',
+      PUBLIC_FONTS_PATH = './public/fonts',
+      PUBLIC_CSS_PATH   = './public/css/main.min.css'
+  ;
 
   less.render(
     source,
     {plugins: [cleanCSSPlugin]},
-    (err, output) => {
-    if (err) throw err;
-    fs.writeFile(
-      PUBLIC_CSS_PATH,
-      output.css,
-      (err) => {
+    function(err, output) {
       if (err) throw err;
-      console.info('Fichier less/main.less compilé et minifié  dans public/css/main.min.css');
-      fs.readdir(NPM_FONTS_PATH, (err, files) => {
-        if(err) throw err;
-        async.each(files,
-          (file, next) => fs.copy(path.join(NPM_FONTS_PATH, file),
-            path.join(PUBLIC_FONTS_PATH, file),
-            next),
-          (err) => {
+      fs.writeFile(
+        PUBLIC_CSS_PATH,
+        output.css,
+        function(err) {
           if (err) throw err;
-          console.info('Fichiers de fonts copiés dans ' + PUBLIC_FONTS_PATH);
-        }
-        );
-      });
+          console.info('Fichier less/main.less compilé et minifié  dans public/css/main.min.css');
+          fs.readdir(NPM_FONTS_PATH, function(err, files) {
+            if (err) throw err;
+            async.each(files,
+                       function(file, next) {
+                         fs.copy(path.join(NPM_FONTS_PATH, file),
+                                 path.join(PUBLIC_FONTS_PATH, file),
+                                 next);
+                       },
+                       function(err) {
+                         if (err) throw err;
+                         console.info('Fichiers de fonts copiés dans ' + PUBLIC_FONTS_PATH);
+                       }
+            );
+          });
 
 
+        });
     });
-  });
 }());