add "what does gobang come from"

README.md

@@ -18,6 +18,10 @@ A cross-platform TUI database management tool written in Rust
 - Multiple Database support (MySQL, PostgreSQL, SQLite)
 - Intuitive keyboard only control
 
+## Where does "gobang" come from?
+
+gobang means a Japanese game played on goban, a go board. The appearance of goban looks like table structure. And I live in Kyoto, Japan. In Kyoto city, streets are laid out on a grid (We call it “goban no me no youna (碁盤の目のような)”). They are why I named this project "gobang".
+
 ## TODOs
 
 - [ ] SQL editor