edited for flow and readability
completed config info with rjection policy, segmentGranularity; some minor edits
removed references to config elements that do not appear on the page
edits for readability
added link to info on how tasks are posted
added link to info on rejection policy
added firehose and plumber sections, which were being referenced but were missing
Merge branch 'master' into igalDruid
Merge pull request #449 from metamx/igalDruid

Igal druid