examples b
merge?? Merge branch 'master' of https://github.com/pxinghao/parallel_submodularmax

Conflicts:
	nips2014/parallel_submodular.pdf
 res?
 exambles b
Renaming deferments to failed trxns
minor edit: fail -> FAIL
Slight increase in image size
minor edit
various minor edits
Comments
 little edits
Minor edits from Mike's suggestions
Updating images
Fixing some bugs in appendix pointed out by Stef
Edits to introduction
More edits to introduction
minor edit: swap order of contributions