Add pool.end() somewhere in the README

[dbernar1]

Hi,

I used the pool functionality, but it was not obvious to me how to release the connections when I'm done.

I found pool.end() in the code: https://github.com/felixge/node-mysql/blob/master/lib/Pool.js#L121 , which seems to do what I needed.

Let me know if you need help adding that in.

Thanks for sharing your software!

[dougwilson]

Indeed, it is not documented. There is no reason it's missing--it was just forgotten I guess. It is certainly a public and important API for the pool :) Feel free to send a PR if I still haven't gotten to it :)