SealedAttribute analyser and code fix.
StaticConstructor analyser and code fix.
EmptyFinalizer analyser and code fix.
More tests. Instance and static constructors without exceptions.
Instance constructor fix.
update readme, a lot of new info
Renaming diagnostic id.
add DoD
add appveyor badge
update readme add nuget count, downloads and issues open
update analyzer ids a per discussion in #41
cleanup.
format code
fix regex analyzer and add regex analyzer tests
fix typo in readme
update vsix info
add DebugNoVsix project config to allow faster builds, #53
only nuget pack when necessary

removing nuget pack from every build, and creating a buildNuget.cmd
file that will allow on demand build of the .npkg
fix and rename nuspec file
allow registration of only a specific version of CSharp

Please see issue #13 where we had some discussions on this matter.
This commit brings some extension methods to help and an example
of how those would be used.