Created Issue: /failOnScriptError exits with 1 even when there are not errors [97]

When using the /failOnScriptError on chutzpah.console.exe the exit code is always 1, even when there are no script errors nor tests failed.

Offending code at ConsoleRunner/Program.cs:

```
return commandLine.FailOnScriptError && testResultsSummary.FailedCount <= 0 ? 1 : testResultsSummary.FailedCount;
```

See related discussion: http://chutzpah.codeplex.com/discussions/392549#post1005293