Update website

vendor/symfony/polyfill-intl-grapheme/README.md

@@ -0,0 +1,31 @@
+Symfony Polyfill / Intl: Grapheme
+=================================
+
+This component provides a partial, native PHP implementation of the
+[Grapheme functions](https://php.net/intl.grapheme) from the
+[Intl](https://php.net/intl) extension.
+
+- [`grapheme_extract`](https://php.net/grapheme_extract): Extract a sequence of grapheme
+  clusters from a text buffer, which must be encoded in UTF-8
+- [`grapheme_stripos`](https://php.net/grapheme_stripos): Find position (in grapheme units)
+  of first occurrence of a case-insensitive string
+- [`grapheme_stristr`](https://php.net/grapheme_stristr): Returns part of haystack string
+  from the first occurrence of case-insensitive needle to the end of haystack
+- [`grapheme_strlen`](https://php.net/grapheme_strlen): Get string length in grapheme units
+- [`grapheme_strpos`](https://php.net/grapheme_strpos): Find position (in grapheme units)
+  of first occurrence of a string
+- [`grapheme_strripos`](https://php.net/grapheme_strripos): Find position (in grapheme units)
+  of last occurrence of a case-insensitive string
+- [`grapheme_strrpos`](https://php.net/grapheme_strrpos): Find position (in grapheme units)
+  of last occurrence of a string
+- [`grapheme_strstr`](https://php.net/grapheme_strstr): Returns part of haystack string from
+  the first occurrence of needle to the end of haystack
+- [`grapheme_substr`](https://php.net/grapheme_substr): Return part of a string
+
+More information can be found in the
+[main Polyfill README](https://github.com/symfony/polyfill/blob/main/README.md).
+
+License
+=======
+
+This library is released under the [MIT license](LICENSE).