cake-build/cake — pull request #137 by devlead (2014-12-13 23:39:12+00:00)
Title: Fixed logging null issue & sln version parsing

1. Fixed so logging won't throw an exception if one of the args should be null but instead log [NULL]
2. Now parses solution version information if available

Example Cake script iterates all solutions in given path and outputs solution info:
```csharp
var solutions = GetFiles("/dev/github/**/*.sln");
foreach(var solutionPath in solutions)
{
Information("Parsing {0}", solutionPath);
var parsedSolution = ParseSolution(solutionPath);
Information(
@"Solution file
Version: {0}
VisualStudioVersion: {1}
MinimumVisualStudioVersion: {2}
Projects: {3}",
parsedSolution.Version,
parsedSolution.VisualStudioVersion,
parsedSolution.MinimumVisualStudioVersion,
string.Join(",", parsedSolution.Projects.Select(project=>project.Name))
);
}
```