updated to include nuget package restore
Merge branch 'master' of https://bitbucket.org/maz100/isla
added nunit via nuget - ensures it is available for AppVeyor builds
removed reactive reference - no longer needed
Added log4net.ext.json for AppVeyor
updating nuget packages for AppVeyor
more updating of references, also ignored test relying on log file as it could not be found on AppVeyor.  May include example file as resource...
tidied test code
added test to handle and log exceptions
commented out test which depended on particular log entries being present