PA2: buffer sizing
adding the util submodule
error fix: iperf location
specify the output file of the receiver iperf should be iperf_server.txt
TODO in buffersizing-sweep.sh
stop tcpprobe
bug fix: correct value of total_flows
oops... instructions in the wrong place
move TODOs to separate functions
Fix trailing whitespaces and remove non-Mininet 2.0 stuff from starter code
Update submodule to latest
Add more hints and prepare for PA2 release.
First commit.