direction commands updated to Up down RPM value

Dependencies:   MAX7219pot MCP23S17 mbed

Fork of POT_V_1_0 by Marine Electricals

Revision:
0:ba33a62aea4e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Sep 28 05:10:42 2017 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/mbed_official/code/mbed/builds/675da3299148
\ No newline at end of file