Enable nuget package restore
Nuget mods, 2i mods, call to Erlang modules

* All nuget related stuff should be in place including package restore.
* Modified the content so that all the values that are needed are stored
  in the body of the session state object that's pushed to Riak.
* The only value that's now a 2i is the expired time.
* All dates are UTC.
* Date strings are now formatted with .ToString("o")
* Added version information.
* Added code signing.
* Added build support for Mono and .NET from the command line.
* Modified the configuration set up so that it loads correctly.
Merge branch 'develop' of github.com:DistributedNonsense/CorrugatedIron.SessionState into develop