List supported file extensions

8 years ago · 0d81214f75
1 changed files with 1 additions and 0 deletions
--- a/README.md
+++ b/README.md
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 ## Supported properties

+- File extensions: `.md`, `.html`, `.htm`
 - HTML tags: `a`, `img`
 - HTML attributes: `href`, `src`
 - URL schemes: `http`, `https`