Update readme.md (#360)

Added a note on how to use the package

Co-authored-by: David Grudl <david@grudl.com>

readme.md

@@ -22,10 +22,14 @@ Latte is cleverly designed and easy to learn for those familiar with PHP, as the
 - 2️⃣ Take a look at the basic set of [tags](https://latte.nette.org/en/tags) and [filters](https://latte.nette.org/en/filters)
 - 3️⃣ Write templates in [editor with Latte support](https://latte.nette.org/en/recipes#toc-editors-and-ide)
 
+
+Usage: https://latte.nette.org/en/develop
+
 </h3>
 
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+
 Do you like Latte? Are you looking forward to the new features?
 
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