Fixed issue with Frosted tool not handling ignores correctly.

[jayclassless]

I guess I made the same stupid mistake when adding Frosted.

[coveralls]

Coverage decreased (-0.03%) when pulling 27e3bbf on jayclassless:frosted_ignored into 6ca1da1 on landscapeio:master.

[carlio]

I've done the same thing several times. There should probably be a common function for it!

[jayclassless]

This probably aligns with #26, but I was thinking that prospector should have a centralized mechanism for crawling the project, finding files to inspect, and applying all the ignore/include/exclude logic, and then it could feed the file list to each of the tools from there. This would be instead of having each tool implement this logic on its own.

If we can centralize this sort of functionality, then we could also just parse the AST for a given file once, rather than having each tool parse the AST. It should make things quicker, especially for bigger projects.

[carlio]

Agreed, especially on the speedup. My main concern is that often the other tools don't expose their internal API neatly, so it may be tricky to pass in an AST and may introduce breaking changes between their versions. I'd still like to investigate it a bit more, however.