Update tests/ServiceStack.OrmLite.Tests/ForeignKeyAttributeTests.cs

Fixed typo on method:
[TestFixtureTearDown]
public void TearDwon() => TearDown()
Implemented deleteById with test
Merge pull request #160 from cmelgarejo/patch-1

Update tests/ServiceStack.OrmLite.Tests/ForeignKeyAttributeTests.cs
Ammended param conversion issues and added GetByIdParameterized method. Added appropriate tests
Merge branch 'master' into SqlParamsCRUD
Merge pull request #161 from Metal10k/SqlParamsCRUD

Sql Params
Merge branch 'master' of https://github.com/ServiceStack/ServiceStack.OrmLite