Perseus is Khan Academy's new exercise question editor and renderer. It allows you to create and display interactive questions.
dev # (development) compiles into build/perseus-1.js and build/perseus-1.css
build # (production) compiles into build/perseus-1.js and build/perseus-1.css
make watch # use watchify to auto compile perseus
make server PORT=9000 # runs the perseus server
利用 watchify 來偵測檔案的變動，並自動編譯。
可以開一個輕量的 Web server (php) 來開發 perseus。
預設網址： http://localhost:9000 。如要改變 port 請使用：
make server PORT=9000
會使用 browserify 加入 envify, bundle-collapser/plugin 編出 perseus-1.js 和 perseus-1.css。請使用這個生成的 perseus 來 commit。
See CONTRIBUTING.md for a walkthrough of how some of the Perseus code works and how to extend it.