Ivan Grishaev

https://github.com/igrishaev/clj-book/commit/15e59cf2627272cc22c5235f60cb02e970c416c7

https://github.com/igrishaev/clj-book/commit/afbb6321a380bf1b65b474d53e94857a5e82e76f

``` curl --request POST --header "Content-Type: application/json" --data '{"username":"John", "city":"NY"}' http://localhost:8080/ ``` add slash before url

https://github.com/igrishaev/clj-book/commit/3ea1680703bf8426b6ec849dd8f7b24b4a090748

https://github.com/igrishaev/clj-book/commit/45927e2d7de900c5bde559f5d69cac2600858c55

https://github.com/igrishaev/clj-book/commit/10e9fa0e709b18e6a6340fc9d24755a6fcc9e144

https://github.com/igrishaev/clj-book/commit/2b0d3187da8f5e8e05f505dabe1a82553b8dc9c7

https://github.com/igrishaev/clj-book/commit/43fcf3aff9f0bc561948f27e92387bb9ae2c9836

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