no functionality, just cloned the Lfp display

This reverts commit 46a11aba, reversing
changes made to 02637b37.

0.0 = Cosyne 2012
0.1 = SfN 2012
0.2 = alpha release
0.3 = beta release
1.0 = the REAL DEAL?

It's unused, declared obsolete, and is triggering GCC warnings. If
anyone wants it back, it'll be in the Git history.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

updated the project build configs to include the SpikePlot.cpp and .h files and exclude the previous plotters

The IntanThread can report TTL events on its 6 input channels. This was tested
with an Arduino; input detection is fast and reliable.

The IntanThread also generates its own timestamps, allowing the software to move
toward a framework in which timestamps come from input sources, rather than
from the RecordNode.

Finally, an ArduinoOutput module was added, which allows the software to
communicate with an Arduino via serial output.