Merge pull request #6 from cameronfletcher/release

v0.3.1
Added icon to nuspec.
Updated version.
Merge branch 'dev' of https://github.com/cameronfletcher/guardian into dev
Minor changes to nuspec.
Fixing versioning issues.
Updated Resharper suppressions. Added code coverage exclusion attribute.
Updated extension menthods and associated tests.
Updated nuspec description.
Updated nuspec description. Again.
Updated nuspec description. For the last time.
Further updates to nuspec description.
Updated build script to use private Nuget server.
Temporarily changed icon url.