Update spec

* Update email address for Ben Kochie.
* Add kramdown-rfc2629 Ruby requirements.
* Add CI test for kdrfc.

Signed-off-by: Ben Kochie <superq@gmail.com>

.circleci/config.yml

@@ -5,6 +5,9 @@ executors:
   golang:
     docker:
       - image: cimg/go:1.15
+  ruby:
+    docker:
+      - image: ruby:2.7
 
 jobs:
   build:
@@ -22,3 +25,17 @@ jobs:
     steps:
       - checkout
       - run: "! make test-impl cmd-parser-text=false"
+  kdrfc:
+    executor: ruby
+    steps:
+      - checkout
+      - run: bundle install
+      - run: bundle exec kdrfc specification/OpenMetrics.md
+      - run: git diff --exit-code
+
+workflows:
+  version: 2
+  openmetrics:
+    jobs:
+      - build
+      - kdrfc

Gemfile

@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'kramdown-rfc2629'

Gemfile.lock

@@ -0,0 +1,17 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    certified (1.0.0)
+    kramdown (1.17.0)
+    kramdown-rfc2629 (1.3.17)
+      certified (~> 1.0)
+      kramdown (~> 1.17.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  kramdown-rfc2629
+
+BUNDLED WITH
+   2.1.4

specification/OpenMetrics.md

@@ -20,7 +20,7 @@ author:
  -  ins: B. Kochie
     name: Ben Kochie
     organization: GitLab
-    email: superq@gmail.com
+    email: ben@nerp.net
  -  ins: B. Brazil
     name: Brian Brazil
     organization: Robust Perception