Add tutorial #99

README.md

@@ -229,6 +229,7 @@
 * [**C**: _A Regular Expression Matcher_](https://www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html)
 * [**C**: _Regular Expression Matching Can Be Simple And Fast_](https://swtch.com/~rsc/regexp/regexp1.html)
 * [**JavaScript**: _Build a Regex Engine in Less than 40 Lines of Code_](https://nickdrane.com/build-your-own-regex/)
+* [**JavaScrpt**: _How to implement regular expressions in functional javascript using derivatives_](http://dpk.io/dregs/toydregs)
 * [**Perl**: _How Regexes Work_](https://perl.plover.com/Regex/article.html)
 * [**Scala**: _No Magic: Regular Expressions_](https://rcoh.svbtle.com/no-magic-regular-expressions)