Merge pull request #18 from egyjs/patch-1

fix Duplicate `Adding sidebar menu item` if installed multiple times

Author: tabacitu

src/Console/Commands/Install.php

@@ -67,7 +67,7 @@ public function handle()
         switch (DIRECTORY_SEPARATOR) {
             case '/': // unix
                 $this->executeArtisanProcess('backpack:add-sidebar-content', [
-                    'code' => '<li class="nav-item"><a class="nav-link" href="{{ backpack_url(\'elfinder\') }}\"><i class="nav-icon la la-files-o"></i> <span>{{ trans(\'backpack::crud.file_manager\') }}</span></a></li>', ]);
+                    'code' => '<li class="nav-item"><a class="nav-link" href="{{ backpack_url(\'elfinder\') }}"><i class="nav-icon la la-files-o"></i> <span>{{ trans(\'backpack::crud.file_manager\') }}</span></a></li>', ]);
                 break;
             case '\\': // windows
                 $this->executeArtisanProcess('backpack:add-sidebar-content', [