This commit was originally from @fredfishgames, but it
needed a big rebase due to use letting it sit too long.
Also, we decided not to have shebangs at the top of test
files.
doc.md better describes the style of documentation that will live
inside these files, since we want these to be similar to our
webhooks' doc.md files in terms of how these are rendered and
composed of Markdown macros.
In case of an errored input (not consistent with the format
of input that the bot seeks), Converter bot was displaying the
errored part first, along with the error message.
This can lead to many failure, if removing_at_mention function
is not working properly then the input '@bot-name 2 m cm' leads
to the bot getting stuck in infinite loop as converter bot will
want to output '@bot-name not a valid number' and hence calling
itself again.
