Used for getting the path to the character device under linux for uart
device. i.e. "/dev/ttyS0"
Adds paths to existing platforms.
Closes#84
Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>
* Exceptions only fired in constructor when it would initialise with a NULL
context causing segfaults if used any further
* Adds exception.i requirement to mraa.i for node.js and python support
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>