Fix Device Description Document Deserialisation

Device description documents that contained custom properties with inner xml rather than simple values caused the deserialation code to throw an XmlException. This should be fixed in this release.

Fix for Notifications on UWP and WinRT

Fixes #17 - Exception when calling ListenForNotifications before Search on WinRT or UWP.

Android Support, Custom Headers and Manual IP Bindings

This release supports

1. Xamarin.Android project support.
2. Fix for Nuget package so it will install into Xamarin.iOS and Xamarin.Android projects in VS 2015.
3. Ability to include custom http headers in the response messages sent by RSSDP, and to retrieve them from the discovered device class.
4. It's now possible to bind the locator or publisher to a specific IP address/adapter (by manually creating a socket factory instance and passing it the IP of the adapter to use). See issue #2 for sample.

WinRT and UWP10 Support

Nuget package and assemblies now support WinRT 8.1 and UWP 10 projects.

Fix for Reading Some Device Description Documents

Merge changes from PR/1 (by kakone) that fixes reading some device description documents that previously threw errors from the internal xml reader.

Hotfix Release

Concurrently disposing DeviceLocator while a SearchAsync call is in progress will now throw an ObjectDisposedException instead of a NullReferenceException.
Updated Nuget dependencies.

Release 1.0.01

Initial release with a couple of tweaks to the nuspec file etc.