0 violations found for PyLint

I encountered this problem for PyLint but other parsers have probably the same issue.

I kept getting "0 violations found" because the parse expects a very precise format which I was able to reproduce by looking at https://github.com/tomasbjerre/violations-lib/blob/master/src/test/resources/pylint/marshmallow.txt (which is `pylint3 --msg-template='{path}:{line}: [{msg_id}({symbol}), {obj}] {msg}' *`)

Maybe you could add something in the readme explicitly says that the output needs to have a very specific format? Would save some time because IMHO it's hard to understand this step.