DOCS-332 aggregation update#102

Merged

tychoish merged 3 commits intomongodb:masterfrom

tychoish:agg-refresh

Aug 17, 2012

Commits on Aug 2, 2012

DOCS-332 aggregation update
Sam Kleinman
committed

Commits on Aug 4, 2012

DOCS-332 centralizing redundant text
Sam Kleinman
committed

Commits on Aug 6, 2012

DOCS-332 additional aggregation modifications.
Sam Kleinman
committed