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diff --git a/vendor/fguillot/picofeed/docs/favicon.markdown b/vendor/fguillot/picofeed/docs/favicon.markdown
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+Favicon fetcher
+===============
+
+Find and download the favicon
+-----------------------------
+
+```php
+use PicoFeed\Reader\Favicon;
+
+$favicon = new Favicon;
+
+// The icon link is https://bits.wikimedia.org/favicon/wikipedia.ico
+$icon_link = $favicon->find('https://en.wikipedia.org/');
+$icon_content = $favicon->getContent();
+```
+
+PicoFeed will try first to find the favicon from the meta tags and fallback to the `favicon.ico` located in the website's root if nothing is found.
+
+- `Favicon::find()` returns the favicon absolute url or an empty string if nothing is found.
+- `Favicon::getContent()` returns the favicon file content (binary content)
+
+When the HTML page is parsed, relative links and protocol relative links are converted to absolute url.
+
+Download a know favicon
+-----------------------
+It's possible to download a known favicon using the second optional parameter of Favicon::find(). The link to the favicon can be a relative or protocol relative url as well, but it has to be relative to the specified website.
+
+If the requested favicon could not be found, the HTML of the website is parsed instead, with the fallback to the `favicon.ico` located in the website's root.
+
+```php
+use PicoFeed\Reader\Favicon;
+
+$favicon = new Favicon;
+
+$icon_link = $favicon->find('https://en.wikipedia.org/','https://bits.wikimedia.org/favicon/wikipedia.ico');
+$icon_content = $favicon->getContent();
+```
+
+Get Favicon file type
+---------------------
+
+It's possible to fetch the image type, this information come from the Content-Type HTTP header:
+
+```php
+$favicon = new Favicon;
+$favicon->find('http://example.net/');
+
+echo $favicon->getType();
+
+// Will output the content type, by example "image/png"
+```
+
+Get the Favicon as Data URI
+---------------------------
+
+You can also get the whole image as Data URI.
+It's useful if you want to store the icon in your database and avoid too many HTTP requests.
+
+```php
+$favicon = new Favicon;
+$favicon->find('http://example.net/');
+
+echo $favicon->getDataUri();
+
+// Output something like that: data:image/png;base64,iVBORw0KGgoAAAANSUh.....
+```
+
+See: http://en.wikipedia.org/wiki/Data_URI_scheme
+
+Check if a favicon link exists
+------------------------------
+
+```php
+use PicoFeed\Reader\Favicon;
+
+$favicon = new Favicon;
+
+// Return true if the file exists
+var_dump($favicon->exists('http://php.net/favicon.ico'));
+```
+
+Use personalized HTTP settings
+------------------------------
+
+Like other classes, the Favicon class support the Config object as constructor argument:
+
+```php
+use PicoFeed\Config\Config;
+use PicoFeed\Reader\Favicon;
+
+$config = new Config;
+$config->setClientUserAgent('My RSS Reader');
+
+$favicon = new Favicon($config);
+$favicon->find('https://github.com');
+```
+\ No newline at end of file