Merge pull request #532 from mrtnzlml/patch-1

README: add `insta` crate into projects using pest

README.md

@@ -150,6 +150,7 @@ Digit:   2
 * [handlebars-rust](https://github.com/sunng87/handlebars-rust)
 * [hexdino](https://github.com/Luz/hexdino)
 * [Huia](https://gitlab.com/jimsy/huia/)
+* [insta](https://github.com/mitsuhiko/insta)
 * [jql](https://github.com/yamafaktory/jql)
 * [json5-rs](https://github.com/callum-oakley/json5-rs)
 * [mt940](https://github.com/svenstaro/mt940-rs)
@@ -168,4 +169,4 @@ Digit:   2
 ## Special thanks
 
 A special round of applause goes to prof. Marius Minea for his guidance and all
-pest contributors, some of which being none other than my friends.
+pest contributors, some of which being none other than my friends.