#60 Add strongname to build

[Dennis Haney]

The attached file contains a patch to add strongname support to the build.
You can generate the snk file using VS, or you can use the sn.exe util to do it.
sn.exe -k WatiN.snk

This enables people to use the unittest assembly to also use internal variables of other assemblies.
This feature is enabled by putting this in the assemblyinfo.cs of the assembly you want to use the internal function/variables from:
[assembly:System.Runtime.CompilerServices.InternalsVisibleTo("unittestassembly,PublicKey=verylongkey")]

This patch furthermore adds the generated XML file, so that people using VS to work with has the documentation at hand when coding as part of the intelligisence :)

[Dennis Haney]

[Jeroen van Menen]

Implemented in WatiN 2.0 beta/final