Added Shared Unit test files
Added Android Tests
Added C# Android Wrapper

Due to a resource generation issue in F# Android the tests have to be
wrapped by C# for now.
See https://bugzilla.xamarin.com/show_bug.cgi?id=17390
Added iOS Tests
Added Solution file
Updated .gitignore
First version of the new Set and Map benchmarks.
Minor tidy up.
Remove packages directory.
Merge pull request #249 from jdh30/SetAndMapPerformanceTests

Set and map performance tests
Merge branch 'master' of https://github.com/fsharp/fsharp