dependency logstash-core >= 2.0.0.snapshot < 3.0.0

Declare a dependency on logstash-core snapshot instead of the release…

… version

Revert "Fix broken gemspec deps"

This reverts commit 840c3ac.

Fixes logstash-plugins#19

bump to 1.0.0

bump version

Remove traces and references the meta logstash gem and change it to u…

…se the new logstash-core gem.

New contributors file, without selfish mode on

Change email for [email protected]

Add Apache 2.0 License