GitHub repository not listing in Google search

I created my first repository with GitHub but when I try to google it, its not listing RoboSpice-Extn-Retrofit-Tutorial

EDIT

I don't know how long it will take. On the other hand anyone can take a help of Google Webmaster, this would solve your problem in minutes :)

That repo seems to have been created less than an hour ago.
Give Google a little time to parse the new repos, and it should show up.

Note that it is referenced by GitHub search already:

https://github.com/search?utf8=%E2%9C%93&q=RoboSpice-Extn-Retrofit-Tutorial

As the OP used the Webmaster Tools to submit its url, the repo is now indexed in Google.

Update 2019: the section "Enabling GitHub Pages to publish your site from master or gh-pages" is now (since 2014) more precise:

To select master or gh-pages as your publishing source, you must have the branch present in your repository.
If you don't have a master or gh-pages branch, you can create them and then return to source settings to change your publishing source.

Once the correct branch is created/populated, and selected as the publishing source, the Google indexing seems to be very quick.