[antlr-interest] Update C# VS2005 integration instructions

[Brian Todoroff]

For those of you working with ANTLR and C# in Visual Studio, I've
updated the integration instructions on the wiki to correctly setup
the output .cs files as dependencies of your .g files.  Also made the
minor edit to use the vs2005 message format included in v3.

http://www.antlr.org/wiki/display/ANTLR3/Integration+with+development+environments

Tested with the latest .jar and VS2005.  Let me know if you experience
any problems.

Brian