Added extensions to Requirements and updated formatting

README.md

@@ -29,6 +29,8 @@ Requirements
 ------------
 
   - [PHP](https://php.net) >= 7.2
+    - The [Multibyte String](https://www.php.net/manual/en/book.mbstring.php) extension
+    - The [OpenSSL](https://www.php.net/manual/en/book.openssl.php) extension
 
 Install with Composer
 ---------------------
@@ -213,7 +215,10 @@ Additional details available in the full documentation at <https://twine.phlak.n
 Multi-Byte Strings
 ---------
 
-Twine aims for multi-byte string compatibility by relying on PHP's [Multibyte String extension](https://www.php.net/manual/en/book.mbstring.php) (mbstring) to perform string operations. For this reason, the mbstring extension is required. Multi-byte strings include Unicode encodings such as UTF-8 and UCS-2.
+Twine aims for multi-byte string compatibility by relying on PHP's
+[Multibyte String extension](https://www.php.net/manual/en/book.mbstring.php)
+(mbstring) to perform string operations. For this reason, the mbstring extension
+is required. Multi-byte strings include Unicode encodings such as UTF-8 and UCS-2.
 
 Changelog
 ---------