Control byte not aligned in a 3-byte command

[kav2k]

There is a problem with the current show() function.
It sends a single byte, while the default BlinkTape firmware expects at least 3 in the buffer to start processing. This means that BlinkyTape won't show anything at all after show(), still waiting on bytes until next pixel is sent.

Whether this is a problem of the firmware or the library is debatable, but a fix that is compatible with the default firmware is to send chr(0)+chr(0)+chr(255) on show().

[kav2k]

In fact, my fork contains a much-improved version of the library. If you're interested, I can pull-request those changes.
But before doing that I'd rather solve the problem explained here: http://forums.blinkinlabs.com/index.php?p=/discussion/70/need-help-diagnosing-failure-with-linux (note that it also happens with your version, though)