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+[travis-image]: https://travis-ci.org/GolangKazan/golangconf2019-challenge.svg?branch=master
+[travis-url]: https://travis-ci.org/GolangKazan/golangconf2019-challenge
+[![Build Status][travis-image]][travis-url]
+
+[GolangConf 2019](https://golangconf.ru/2019) challenge from and for [GolangKazan](https://golangkazan.github.io/) community!
+
+The winner will get a free ticket to a conference.
+
+How to participate:
+1. Make a public post with both `#GolangKazan` and `#GolangConf2019` hash tags.
+2. Fork this repository.
+3. Add yourself in `challenge.go` file variable `gophers`.
+4. Send a [Pull Request](https://help.github.com/en/articles/creating-a-pull-request) with your changes.
+5. If CI tests will pass, your contribution will be merged.
+6. When PR is merged, you're awesome and can potentially win a prize.
+
+We print winner after tests are finished.
+
+When we'll stop this challenge, the last printed winner will be awarded.
+
+<hr>
+
+For a post there are several things to be considered:
+* Post must survive until we stop the challenge and announce the winner.
+* Account that does the announcement must have at least 10 followers/subscribers.
+
+Possible sites that can be used for a public post: [vk](http://vk.com/), [twitter](http://twitter.com/), [instagram](https://www.instagram.com).<br>
+Note that you can use other social network, channel.
+
+<hr>
+
+If you have any questions, feel free to ask them at https://t.me/GolangKazan channel.