Added Extensions section for auditboard

Closes #134 (closed)

nefed.xml

@@ -15640,7 +15640,8 @@ KNGked4df0r1o5CozJ35FjKx1fiYucuvGXU+UZd5Yg6sF6MRhQqud32X3eOFJXS/ndm/jGit7B6A
         </ContactPerson>
     </EntityDescriptor>
     <EntityDescriptor xmlns="urn:oasis:names:tc:SAML:2.0:metadata" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" entityID="https://nebraska.auditboardapp.com/api/v1/sso/saml/metadata.xml" ID="https___nebraska_auditboardapp_com_api_v1_sso_saml_metadata_xml">
-        <mdrpi:RegistrationInfo registrationAuthority="https://nebraska.edu/nefed" />
+        <Extensions>
+            <mdrpi:RegistrationInfo registrationAuthority="https://nebraska.edu/nefed" />
             <mdattr:EntityAttributes>
                 <saml:Attribute Name="http://macedir.org/entity-category" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri">
                     <saml:AttributeValue>https://nebraska.edu/category/registered-by-nefed</saml:AttributeValue>
@@ -15656,6 +15657,7 @@ KNGked4df0r1o5CozJ35FjKx1fiYucuvGXU+UZd5Yg6sF6MRhQqud32X3eOFJXS/ndm/jGit7B6A
                 <mdui:PrivacyStatementURL xml:lang="en">https://www.auditboard.com/privacy-policy/</mdui:PrivacyStatementURL>
                 <mdui:Logo height="85" width="141" xml:lang="en">https://www.auditboard.com/img/globals/logos/ab-logo-horizontal-blue-black.svg</mdui:Logo>
             </mdui:UIInfo>
+        </Extensions>
         <SPSSODescriptor protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
             <NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:persistent</NameIDFormat>
             <AssertionConsumerService index="1" isDefault="true" Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" Location="https://nebraska.auditboardapp.com/api/v1/sso/saml/assert"/>