Merge pull request #1 from vvv214/master

草泥马！！！
Merge pull request #2 from vvv214/master

end-to-end protocol added, section 2.3 revised
Merge pull request #3 from vvv214/master

modified all over~ u modify it the last time and then can upload! (though there is many things to do)
summay bug fix
test
Merge remote-tracking branch 'sb_version/master'

Conflicts:
	Summary.aux
	Summary.log
	Summary.pdf
	Summary.synctex.gz