Start of the dotNet45 work. Update the .net framework version to dotNet45 in all projects
Reinstalled Newtonsoft.Json nuget package as this is needed after framework version change
Merge pull request #161 from AnthonySteele/dot-net-45

Start of the dotNet45 work. Update the .net framework version to dotNet4.5
Async all the requests!
The big one, touching a  lot of files. Checkpoint commit not that it compiles
- Please() and Response() return Task<T> not T. All requests are async
- using System.Net.Http.HttpClient (new in .Net 4.5) for the underlying Http connection. It's better in many ways. and it's only async.
- all tests are async and await.
- Delete the HttpMethod enum as .net 4.5 has this (though each http method is now an object not an enum member)
Fix tests
Notably that HttpMethod is not an enum any more (see System.Net.Http.HttpMethod),
and HttpMethod is not serializable, when it needs to be in a request in an exception
but these can be worked around
Merge pull request #162 from AnthonySteele/dot-net-45

Dot net 45
Minor fixes
- after upgrading to .net 4.5, we actually depend on newtonsoft.Json v 6.0.3. The nuspec file should reflect this
- updated the version no in AssembyInfo files for wrapper and schema
Merge pull request #163 from AnthonySteele/dot-net-45

Minor fixes
General review of tests
 - remove api requests from testFixtureSetup inBasketCreateTests.cs as setup methods are not designed to be async. Use a method called in the async test instead. Removed the "BusyAwait()" hack as it's unused after this.
 - deleted some tests which are ignored because they require special access rights. They don't belong in this solution any more.
 - In many tests, separate the steps of building an api request from the step of firing it.
   Only the firing step with ".Please()" on the end needs "await" at the front of it.
   They can be all chained up if you like, but I prefer two steps as a matter of taste.
 - fixed some poor names. Lots of things were called "artistBrowse" regardless of type.
 - type respoinses as "var" as per house style
Merge pull request #164 from AnthonySteele/dot-net-45

General review of tests