README.md: how to download a single example

[noamraph]

I wanted to try an example, and I didn't manage to clone the repository or download the zip, because the repository is very big and the connection hang up. So I discovered I can use svn to download a single example. Perhaps it can be useful for others too.

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[noamraph]

@googlebot I signed it!

[redbrogdon]

That's a useful tip!

Would you mind going one step further and including a line about how to use a shallow clone to get the current state of the whole repo without its entire commit history? That could also help developers on unreliable connections.

https://www.perforce.com/blog/vcs/git-beyond-basics-using-shallow-clones

[redbrogdon]

Closing this for now, since it hasn't been updated for a month. @noamraph, if you're still interested in this PR, feel free to reopen it.

[noamraph]

@redbrogdon I added a tip about shallow clone, as you suggested. It seems this also re-opened the PR.

[redbrogdon]

@noamraph, to spare you from having to come back and edit this again, I went ahead and tweaked the title, and then merged it.

Thanks for the PR!

[noamraph]

@redbrogdon great, thanks!