Add Danger

Dangerfile

@@ -0,0 +1,15 @@
+
+# Ensure there is a summary for a pull request
+fail 'Please provide a summary in the Pull Request description' if github.pr_body.length < 5
+
+# Warn when there are merge commits in the diff
+warn 'Please rebase to get rid of the merge commits in this Pull Request' if git.commits.any? { |c| c.message =~ /^Merge branch 'master'/ }
+
+# Check links
+require 'json'
+results = File.read 'ab-results-README.md-markdown-table.json'
+j = JSON.parse results
+if j['error']==true
+  fail j['title']
+  markdown j['message']
+end