Lint markdown in addition to awesome list.

.github/markdown-lint.yaml

@@ -0,0 +1,13 @@
+# See example at: https://github.com/avto-dev/markdown-lint/blob/master/lint/config/changelog.yml
+
+# Line length <https://github.com/DavidAnson/markdownlint/blob/master/doc/Rules.md#md013>
+# XXX Temporary disabled because of line continuation edge-case. See:
+# https://github.com/DavidAnson/markdownlint/issues/302
+MD013: false
+
+# Inline HTML <https://github.com/DavidAnson/markdownlint/blob/master/doc/Rules.md#md033>
+# is allowed for beautiful rendering on GitHub.
+MD033:
+  # Whitelist some elements for beautiful rendering on GitHub.
+  allowed_elements:
+    - 'img'