remove set -e, some tests were causing the script to exit silently, update 1password version, update maxfile limits with  launchctrl cmd as launchd.conf is no longer used.
restore set -e, added limit.maxfiles.plist
fix some checks in yosemite with set -e
make sure current session has new maxfiles limit
Merge pull request #24 from goodeggs/kerry/yosemite

updates for yosemite