update doc
Merge branch 'master' of github.com:zoechip/Project-Info-Spreading

# By nwili
# Via nwili
* 'master' of github.com:zoechip/Project-Info-Spreading:
  network characterization
  important variable
  important variable

Conflicts:
	doc/latex/infospreading.aux
	doc/latex/infospreading.log
	doc/latex/infospreading.pdf
	doc/latex/infospreading.synctex.gz
	doc/latex/infospreading.toc