editing paper
Merge branch 'master' of github.com:yqzhang/Network-Communication

Conflicts:
	paper/project.aux
	paper/project.log
	paper/project.pdf
	paper/project.tex
Merge branch 'master' of github.com:yqzhang/Network-Communication

Conflicts:
	paper/project.pdf
Congestion analysis
Merge pull request #32 from qdx/master

add some graph and congestion analysis