XML serialization now works.

[dnikolovv]

• Added standalone tests for the json/xml serialization. (xml, json)
• Added XML format support in the BasicSample project's ValuesController and tests that check whether links are returned when fetching data with ?format=xml. (here)

The JSON serialization logic remains unchanged.

The XML format used is this one (note that the "controller details" are lost while serializing to XML and the link name is put inside the rel attribute).

<?xml version="1.0"?>
<ItemsLinkContainerOfValueInfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <link href="http://localhost/api/Values" method="GET" rel="self"/>
  <link href="http://localhost/api/Values" method="POST" rel="insert"/>
  <Items>
    <ValueInfo>
      <link href="http://localhost/api/Values/1" method="GET" rel="self"/>
      <Id>1</Id>
      <Value>Value One</Value>
    </ValueInfo>
    <ValueInfo>
      <link href="http://localhost/api/Values/2" method="GET" rel="self"/>
      <Id>2</Id>
      <Value>Value Two</Value>
    </ValueInfo>
    <ValueInfo>
      <link href="http://localhost/api/Values/3" method="GET" rel="self"/>
      <Id>3</Id>
      <Value>Value Three</Value>
    </ValueInfo>
  </Items>
</ItemsLinkContainerOfValueInfo>

Closes https://github.com/riskfirst/riskfirst.hateoas/issues/17 and https://github.com/riskfirst/riskfirst.hateoas/issues/25.

[jamiecoh]

This is looking good. Do you think this is a minor or Major version change (Is it entirely backward compatible?)

[dnikolovv]

Well, I tried my best to make it entirely backward compatible. All tests are passing and the APIs have remained the same. I don't think it's a major version change.