Added Latte templating tool (#1187)

* Update README.md

Added Latte to templating tools

* Update README.md

Sorted alphabetically and added full stop to the end of sentence.

README.md

 ### Templating
 *Libraries and tools for templating and lexing.*
 
+* [Latte](https://latte.nette.org/) - The safest & truly intuitive templates for PHP.
 * [MtHaml](https://github.com/arnaud-lb/MtHaml) - A PHP implementation of the HAML template language.
 * [Mustache](https://github.com/bobthecow/mustache.php) - A PHP implementation of the Mustache template language.
 * [PHPTAL](https://phptal.org/) - A PHP implementation of the [TAL](https://en.wikipedia.org/wiki/Template_Attribute_Language) templating language.