Upon an error happening when fetching events, log it

If an error happens anywhere in the process of fetching or formatting
the event list, return the error up to the parent caller, and log the
error message for debugging later.

Signed-off-by: Adam Jimerson <vendion@gmail.com>
Add supported commands to the README

Added supported commands to the README to make up for help text being
broken.

Signed-off-by: Adam Jimerson <vendion@gmail.com>