Added Cake.SqlServer

[trailmax]

Added a description of the new SqlServer package into list of addins

[dnfclas]

Hi @trailmax, I'm your friendly neighborhood .NET Foundation Pull Request Bot (You can call me DNFBOT). Thanks for your contribution!

This seems like a small (but important) contribution, so no Contribution License Agreement is required at this point. Real humans will now evaluate your PR.

TTYL, DNFBOT;

[gep13]

@trailmax can I get you to do something for me?

As this PR stands right now, the generated documentation looks like this:

Which is missing all the documentation that you put into the source code here:

This is due to the fact that you are not including the XML Documentation file within in the NuGet Package. Would you be in a position to add this file into the NuGet Package, so that the documentation can be generated?

[gep13]

Raised an issue about this here: cake-contrib/Cake.SqlServer#3

[trailmax]

Added the missing xml file into nuget and added the reference to this file in the addins.xml.

[gep13]

@trailmax thanks for getting this added. This is now live here: http://cakebuild.net/dsl/sqlserver