diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fa0fe3f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+# Ignore data/ and tmp/
+data/
+tmp/
diff --git a/README b/README.md
similarity index 100%
rename from README
rename to README.md