The webmasters, generally have account in Google Webmaster Tools Central. Login to your account. Go to dashboard. Find the link Diagnostics and click here.
Find link Fetch as Googlebot and click.
Click on the Fetch button.
Google will show the message Your request was completed successfully.
Find the link Submit to index and click.
URL and all linked pages and click submit button.
Google will show the message Your request has been received and will be processed shortly. and URL and linked pages submitted to index.
Now wait and see what happens! Your website and all pages will be indexed by Googlebot within a few hours. This is the secret of webmasters, the secret of SEO, the secret of Google as well.