Merge pull request #48 from ElemarJR/master

Removing Where when it is possible; add XUnit.extensions package
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