Acks += Shota Kawajiri (github/estshorter)

Author: hollasch

books/acknowledgments.md.html

@@ -53,6 +53,7 @@
   - Phil Cristensen
   - [Ronald Wotzlaw](https://github.com/ronaldfw)
   - [Shaun P. Lee](https://github.com/shaunplee)
+  - [Shota Kawajiri](https://github.com/estshorter)
   - Tatsuya Ogawa
   - Thiago Ize
   - Vahan Sosoyan