Add "neuropod" tag to stackoverflow?

[vkuzmin-uber]

I suggest to add Support section to README.md that has a link to Issues and stackoverflow

 ## Support
 
Use [stackoverflow](http://stackoverflow.com/questions/tagged/neuropod) and/or
[Github issues](https://github.com/uber/neuropod/issues).

If agree, feel free to add it or let me know and I can make PR

[vkuzmin-uber]

Just checked "Creating the new tag 'neuropod' requires at least 1500 reputation." @tgaddair I see "horovod" has tag. Do you have "reputation" at StackOverflow by any chance?

[tgaddair]

Afraid not :(