Example in the README needs to specify XML namespace

<annotation-driven>
    <message-converters>
        <beans:bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
            <beans:property name="objectMapper">
                <beans:bean class="com.knappsack.swagger4springweb.util.ScalaObjectMapper"/>
            </beans:property>
        </beans:bean>
    </message-converters>
</annotation-driven>

It's best if it's mvc:annotation-driven instead of assuming it's the defualt namespace

wkennedy / swagger4spring-web

Example in the README needs to specify XML namespace #79