MCP4018 sample

Dependencies:   AQM0802 MCP4018 mbed

See https://developer.mbed.org/users/yasuyuki/notebook/MCP4018/

Revision:
0:b111edfe05a5
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+++ b/AQM0802.lib	Sat Nov 08 12:16:57 2014 +0000
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+http://mbed.org/users/yasuyuki/code/AQM0802/#6fa303916aa8