Checking CONTRIBUTING.md (without YAML)

diff --git a/bin/lesson_check.py b/bin/lesson_check.py
index b65946aa263d7f86cfeec7d8a56ce0c09cc130e2..ef69f5e3f7d0329e0c3bb1800f1c417bfcf9387d 100755 (executable)
--- a/bin/lesson_check.py
+++ b/bin/lesson_check.py
@@ -27,6 +27,7 @@ SOURCE_DIRS = ['', '_episodes', '_extras']
 # This list must include all the Markdown files listed in the 'bin/initialize' script.
 REQUIRED_FILES = {
     '%/CONDUCT.md': True,
+    '%/CONTRIBUTING.md': False,
     '%/LICENSE.md': True,
     '%/README.md': False,
     '%/_extras/discuss.md': True,