simple flow table match,need to be tested
fixed simple flow_table_ match,
node's color change when match occured,
actions only support output (but flood not support yet)
add vlan & tos-bits, support output=flood
only the higher priority match_flows will be processed
"tos-bits" is replaced with "tosBits"
Merge remote-tracking branch 'upstream/dev' into flowhighlight
support more actions:
set-src-ip/set-dst-ip
set-src-port/set-dst-port
set-src-mac/set-dst-mac
set-tos-bits
Provide the "Simulate" button
can directly simulate the flow without user input
Correct the wrong names
merge from upstream/dev
Merge pull request #25 from win911/flowhighlight

Finish flow highlight