Add installation step of "C++ Toolchain" on Fedora

docs/build-instructions/linux.md

@@ -7,6 +7,7 @@ Ubuntu LTS 12.04 64-bit is the recommended platform.
   * OS with 64-bit or 32-bit architecture
   * C++ toolchain
     * on Ubuntu/Debian: `sudo apt-get install build-essential`
+    * on Fedora: `sudo yum --assumeyes install make gcc gcc-c++ glibc-devel`
   * [node.js](http://nodejs.org/download/) v0.10.x
     * [Ubuntu/Debian/Mint instructions](https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager#ubuntu-mint-elementary-os)
     * [Fedora instructions](https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager#fedora)