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.
The help message string was modified in yoda.py file to correctly
instruct the user. But the help message string was not modified
accordingly in the test file.
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.
Add error handling support for empty messages and invalid
input to yoda bot, which was previously making the bot crash.
Add comments to describe tests.
Since we want our bots to be both python 2 and python 3 compatible,
we use six to make up for both of them and run the bot smoothly.
'http.client' was basically used for error-handling by the author
of the bot, urllib errors can be handled by the urllib itself. So,
using this for simplicity.
urllib.request.urlopen raises URLError on protocol errors.
There is no library as 'http.bot_handler'.
'http.client' is what the author of this bots initially wrote.
Searching through the git history shows that someone mistakenly
replaced 'client' with 'bot_handler' here.
