Merge pull request msallin#20 from msallin/Support_Multiple_DotNet_Ve…

…rsions

Support multiple dot net versions

Update README.md

Merge pull request msallin#15 from msallin/CI_Test

CI implementation appveyor

Merge pull request msallin#11 from MichaelCsitkovics/patch-3

Update SqliteDropCreateDatabaseAlways.cs