run travis tests on 1.0.3 and 1.1.1
nsqd: de-flake output buffering test (again)
Merge pull request #225 from mreiferson/travis_225

travis tests on go 1.1.1 and deflake
fix cases that caused empty files

* fix cleanup to sync/close file after reader exit
* add --skip-empty-files flag
Merge pull request #216 from jehiah/empty_files_216

nsq_to_file: corrupt empty gzip file
fix travis image to filter to master
nsqlookupd: make Registrations non-pointer
nsqlookupd: add tombstone information to /nodes
nsqadmin: display tombstone information on /nodes
Merge pull request #228 from mreiferson/lookupd_dead_228

nsqlookupd/nsqadmin: dead nodes remain in /nodes list
bump to 0.2.22-alpha (update changelog)