Create src/engine.py

first attempt.. needs to clear some confusion around hex values.
needs to actually print values
Update engine.py
Update README.md

serial.read() not readlines()
changed it to grab a packet at a time instead of a line
got it to accept the response and answer with LST
Merge branch 'master' of http://github.com/treeherder/yasnac

Conflicts:
	src/engine.py
actually it doesn't work without a 5ms delay before response
changed from .find to use if/in
Merge pull request #1 from jerkey/master

got it to accept first response and ask for LST now
copied an actual session (checksum perhaps), we receive ACK after this.
add checksum calculation, determined it's not using checksum
added response to ACK (now it wants DSZ)
man in the middle attack

instantiate the class, and you're ready to roll
Merge branch 'master' of http://github.com/treeherder/yasnac
Update mtm.py
Merge branch 'master' of http://github.com/treeherder/yasnac
add mitm.py to spy on a serial conversation with two serial ports
add mitm.py to spy on a serial conversation with two serial ports
Merge branch 'master' of http://github.com/jerkey/yasnac