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+Browsers Requirement
+---
+
+- Chrome >= 47, Chrome for Android >= 47
+- Safari >= 9, iOS Safari >= 8.4
+- Firefox >= 44
+- IE >= 9, Edge >= 12
+- Opera >= 34, Opera Mini not supported
+- Android Browser >= 4.4
+
+Prerequisite
+---
+
+- Node.js 6.x or up (test up to 7.5.0)
+- Database (PostgreSQL, MySQL, MariaDB, SQLite, MSSQL) use charset `utf8`
+- npm (and its dependencies, especially [uWebSockets](https://github.com/uWebSockets/uWebSockets#nodejs-developers), [node-gyp](https://github.com/nodejs/node-gyp#installation))