set default_codec doc attribute

Author: jsvd

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 3.0.7
+ - Docs: Set the default_codec doc attribute.
+
 ## 3.0.6
  - Update gemspec summary
 

docs/index.asciidoc

@@ -1,5 +1,6 @@
 :plugin: unix
 :type: input
+:default_codec: line
 
 ///////////////////////////////////////////
 START - GENERATED VARIABLES, DO NOT EDIT!
@@ -100,4 +101,6 @@ This setting is only used if `mode` is `client`.
 
 
 [id="plugins-{type}s-{plugin}-common-options"]
-include::{include_path}/{type}.asciidoc[]
+include::{include_path}/{type}.asciidoc[]
+
+:default_codec!:

logstash-input-unix.gemspec

@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
 
  s.name = 'logstash-input-unix'
- s.version = '3.0.6'
+ s.version = '3.0.7'
  s.licenses = ['Apache License (2.0)']
  s.summary = "Reads events over a UNIX socket"
  s.description = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"