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
add HLL maxOverflow tests
make hll tests deterministic
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
fix bug with reference closing that I swore we fixed
make last commit a final var
[maven-release-plugin] prepare release druid-0.6.75
[maven-release-plugin] prepare for next development iteration