feat(pre commit): add precommit

README.md

@@ -64,7 +64,12 @@ This project can be made better and will evolve as StarkNet matures. Your contri
 - Add an explanation in the comments of the exercise if you feel it needs more explanation
 - Add exercises showcasing your favorite Cairo feature
 
-​
+​Before contributing run this
+
+```bash
+ln -s ../../pre-commit.sh .git/hooks/pre-commit
+```
+
 ​
 
 ## Getting ready to work

pre-commit.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+echo "Linting the markdown files"
+for md_file in $(find ./ -type f -name "*.md"); do
+    npx markdownlint-cli2-fix $md_file
+done
+
+echo "compiling and formating the cairo files"
+for cairo_file in $(find contracts/ -type f -name "*.cairo"); do
+    echo $cairo_file
+    starknet-compile $cairo_file >/dev/null
+    cairo-format -i $cairo_file
+done
+echo "done"