Adding overload to EventWriter which accepts a Severity enum

If is just a "nit" why does it matter ;-)

On Mon Dec 01 2014 at 1:37:04 PM Shakeel Mohamed <notifications@github.com>
wrote:

> In test/unit-tests/TestModularInputs.cs:
>
> > @@ -478,7 +480,22 @@ public void SerializeEventWithDone()
> >              Assert.False(doc.Element("event").HasAttributes);
> >          }
> >
> > -
> > +
>
> nit: extra blank line
>
> —
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> <https://github.com/splunk/splunk-sdk-csharp-pcl/pull/27/files#r21121506>.
>