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+# Syntax based normalization of URI's
+
+This normalizes URI's based on the specification RFC 3986 
+https://tools.ietf.org/html/rfc3986
+
+Example usage:
+
+	require_once 'vendor/autoload.php';
+
+	$url = 'eXAMPLE://a/./b/../b/%63/%7bfoo%7d';
+	$un = new URL\Normalizer( $url );
+	echo $un->normalize();
+
+	// result: "example://a/b/c/%7Bfoo%7D"
+
+The normalization process preserves semantics so, for example, the following URL's are all equivalent:
+
+HTTP://www.Example.com/ and http://www.example.com/
+http://www.example.com/a%c2%b1b and http://www.example.com/a%C2%B1b
+http://www.example.com/%7Eusername/ and http://www.example.com/~username/
+http://www.example.com and http://www.example.com/
+http://www.example.com:80/bar.html and http://www.example.com/bar.html
+http://www.example.com/../a/b/../c/./d.html and http://www.example.com/a/c/d.html
+http://www.example.com/?array[key]=value and http://www.example.com/?array%5Bkey%5D=value
+
+The following normalizations are performed:
+
+1. Converting the scheme and host to lower case
+2. Capitalizing letters in escape sequences
+3. Decoding percent-encoded octets of unreserved characters
+4. Adding trailing /
+5. Removing the default port
+6. Removing dot-segments
+
+For more information about these normalizations, please see the following Wikipedia article:
+
+http://en.wikipedia.org/wiki/URL_normalization#Normalizations_that_Preserve_Semantics
+
+For license information, please see LICENSE file.
+
+## Options
+
+Two options are available when normalizing URLs which are disabled by default:
+
+1. Remove empty delimiters.  Enabling this option would normalize http://www.example.com/? to http://www.example.com/  Currently, only the query string delimiter (?) is supported by this option.
+2. Sort query parameters.  Enabling this option sorts the query parameters by key alphabetically.  For example, http://www.example.com/?c=3&b=2&a=1 becomes http://www.example.com/?a=1&b=2&c=3
+
+## TODO
+
+Add further scheme-based normalization steps, as detailed in section 6.2.3 of the RFC.