Add PEGTL to Miscellaneous section.

README.md

@@ -751,6 +751,7 @@ array expressions, inspired by NumPy syntax. [BSD 3-clause] [website](http://qua
 * [Mach7](https://github.com/solodon4/Mach7) - A Pattern-matching library for C++. [BSD]
 * [meta](https://github.com/skypjack/meta) - Header-only, non-intrusive and macro-free runtime reflection system in C++. [MIT]
 * [pdqsort](https://github.com/orlp/pdqsort) - Pattern-defeating quicksort. [zlib]
+* [PEGTL](https://github.com/ColinH/PEGTL) - The Parsing Expression Grammar Template Library, a C++11 parser library. [MIT]
 * [PHP-CPP](https://github.com/CopernicaMarketingSoftware/PHP-CPP) - A library to build PHP extensions with C++. [Apache2] [website](http://www.php-cpp.com/)
 * [Remote Call Framework](http://www.deltavsoft.com/) - Inter-process communication framework for C++. [GPL2/Commercial]
 * [Scintilla](http://scintilla.org/) - A free source code editing component. [MIT]