DOCS-1492 db.collection.count, db.collection.save

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1492: edits
DOCS-1492 cursor.sort cursor.min

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1492: edits
DOCS-1492 cursor.hint cursor.map cursor.max

Signed-off-by: Sam Kleinman <samk@10gen.com>
DOCS-1492: edits