fluent/fluentd — pull request #212 by tagomoris (2013-10-17 03:28:18+00:00)
Title: add "ruby" keyword 

This pull-request is for #195

* to pass Kernel functions
```ruby
file_path_list = ruby.open("/path/to/log_file.list"){|f| f.readlines}.map(&:chomp)
file_path_list.each do |path_string|
source {
type "tail"
path path_string
...
}
end
```

* to provide blocks with normal ruby syntax/features
```ruby
file_path_list = ruby {
require 'net/http'
res = Net::HTTP.start("ourserver.local", 80) {|http|
http.get('/server_list.txt')
}
res.split(/\r?\n/)
}
file_path_list.each do |path_string|
...
end
```