clang .profdata support

[mrgreywater]

It would be nice if this project would support the source-code based coverage from clang, which is alot more accurate. It might be out of scope for this project (the name is coveralls-lcov) after all, but cool regardless.
https://llvm.org/docs/CoverageMappingFormat.html

Another ruby parser for the profdata file format can be found here (for objective-c, but adaptible): https://github.com/SlatherOrg/slather/blob/master/lib/slather/profdata_coverage_file.rb

[okkez]

Thank you for request.
I will try implementing this in next month.

[okkez]

I'm developing https://github.com/okkez/coveralls-llvm-cov