Added new example config for KEMI ruby. Tested and functional with basic kamailio.cfg

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#### Description Another KEMI config for a supported language (app_ruby)

You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/2026

-- Commit Summary --

* core: added example simple routing blocks/basic config for KEMI ruby

-- File Changes --

A misc/examples/kemi/kamailio-basic-kemi-ruby.rb (295)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2026.patch https://github.com/kamailio/kamailio/pull/2026.diff