For Laravel 5:
Rename server.php in your Laravel root folder to index.php
Copy the .htaccess file from /public directory to your Laravel root folder.
That's it!


But this will make your system vulnerable


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 all you need to do is to put this code into the .htaccess file in 
  public


RewriteEngine On
RewriteCond %{REQUEST_URI} !^/public/
RewriteRule ^(.*)$ /public/$1 [L,QSA]
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if it doesn't work just put a file namely index.html in root directory
and in side it put a script code 
like