message: Added comments for checking version
diff: @@ -53,10 +53,12 @@ fn check_wrangler_versions() -> Result<WranglerVersion, failure::Error> {
  let current = get_installed_version()?;
  let latest = match get_version_disk(&version_file)? {
  + // If version.toml doesn't exist, fetch latest version
  Some(last_checked_version) => {
  let time_since_last_checked =
  current_time.duration_since(last_checked_version.last_checked)?;
  if time_since_last_checked.as_secs() < ONE_DAY {
  + // If checked version within last day, current and latest will be the same
  current.clone()
  } else {
  Version::parse(&last_checked_version.latest_version)?
  