#160 Store config name and description in metadata tags

[Roman Ivanov]

Right now eclipse-cs store its properties in checkstyle config as comment:

<!--
    Checkstyle-Configuration: My config
    Description: none
-->

checkstyle has a special tag "metadata" - https://github.com/checkstyle/checkstyle/blob/master/config/checkstyle_checks.xml#L15

This tag could help to preserve name and description to be populated to Eclispe-CS on file load.
It will help keep the same file on GIT amoung all team and easilty commit it if changes happen.