Add additional comment about Prerequisite to README

Author: sakajunquality

README.md

@@ -51,6 +51,8 @@ Prerequisite
 - Node.js 4.x or up (test up to 6.7.0)
 - Database (PostgreSQL, MySQL, MariaDB, SQLite, MSSQL) use charset `utf8`
 - npm
+- gcc/make
+	- `yum groupinstall 'Development Tools'` for RHEL, `sudo apt-get install build-essential` for Debian
 
 Get started
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