Merge pull request #57 from modilabs/master

Up
add option to clear pending updates
check if upadate is valid in calculate updates, remove pending update if invalid
return pending updates in info, helper methods for clearing and removing a pending update
check update invalid returns success but does not commit or remain pending, closes 596
Merge pull request #58 from modilabs/596-faster-add

596 faster add
Merge pull request #60 from modilabs/master

Up
Merge pull request #62 from modilabs/master

Up
Fixed travis-CI link
Merge pull request #63 from RasmusWriedtLarsen/patch-1

Fixed travis-CI link, thanks @RasmusWriedtLarsen!
Merge pull request #64 from SEL-Columbia/master

latest from forks
PLD: add link to map
Merge pull request #65 from pld/egypt-map-link

PLD: add link to map
PLD: update repo links to use sel and pld over modilabs
Merge pull request #66 from pld/update-repo-links

PLD: update repo links to use sel and pld over modilabs
PLD: fix reference to io module, it was renamed to readers, closes #68
PLD: do not clean up celery
PLD: try without mp fix
PLD: update docs link
PLD: downsample farther