Support for comments

[AAverin]

Hi.
Thanks for the plugin.
Any plans to support comments? It would be great to have both full-line comments and end of the line comments.
End-line comments could go to a specific string, as a separate column - to provide some tips and context for translation.
Full-line comments could help separate sections in the strings files

[LiewJunTung]

Hi AAverin,
No problem, I was having a problem doing translation for my company app so I wrote this hastily. Hopefully it can help others as well.

About the comments feature, great idea!
CSV to XML with comments should be okay, I'll add them in the future if I'm free enough
XML to CSV with comments however, that one will have to wait abit longer.

Perhaps you can help in improving this tool by sending in a pull request. :)