diff --git a/advanced/readme.txt b/advanced/README.md similarity index 100% rename from advanced/readme.txt rename to advanced/README.md diff --git a/applications/readme.txt b/applications/README.md similarity index 100% rename from applications/readme.txt rename to applications/README.md diff --git a/basic/readme.txt b/basic/README.md similarity index 100% rename from basic/readme.txt rename to basic/README.md diff --git a/intermediate/readme.txt b/intermediate/README.md similarity index 100% rename from intermediate/readme.txt rename to intermediate/README.md