Deal with Windows line endings

[SuperWig]

Figured the example in the readme should work out of the box and not have to use a custom trim_characters

[zhouw]

How did you deal with "\r\n"? There seems to be a trailing '\r' when reading windows file.

[huangshangbin]

i have a wraper this csv project https://github.com/huangshangbin/Csv

[softhorizons]

Suggest you upgrade parameters.hpp #35 to fix, like this:

using trim_whitespace = trim_policy::trim_characters<' ', '\t', '\r', '\n'>