More wording changes on requirements section
turn the architecture description into an enumerated list
minor edits to the Approach section
add lit review as dep for main
add COPS to lit review
Merge branch 'feedback' of https://github.com/mheon/checksims into pull/19

Conflicts:
	Makefile
	doc/src/approach.ltx

Major rewrite with a lot of additions.
two final changes before merge
replace en-dashes with em-dashes
merge #22
merge #22 again!
Merge remote-tracking branch 'dm/master' into feedback

Signed-off-by: Matthew Heon <mheon@redhat.com>

Conflicts:
	doc/src/litreview.ltx