Allow custom comment for sources list
Merge pull request #311 from juniorsysadmin/custom-comment-for-sources-list

Allow for custom comment in sources.list file
Update apt::source example in README.md for #311

This patch updates the apt::source example to include a comment (see #311)
Merge pull request #315 from juniorsysadmin/apt-source-example-with-comment-parameter

Update apt::source example in README.md for #311