Show key requirements when listing collectors

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
  - New Tool: aquatone-takeover: Check discovered hosts for subdomain takeover vulnerabilities
 
 ### Changed
+ - Show key requirements in for collectors when issuing `aquatone-discover --list-collectors`
 
 
 ## [0.2.0]

exe/aquatone-discover

@@ -67,10 +67,11 @@ OptionParser.new do |opts|
 
   opts.on("--list-collectors", "See information on collectors") do
     Aquatone::Collector.descendants.each do |collector|
-      puts "Name.......: #{collector.meta[:name]}"
-      puts "Description: #{collector.meta[:description]}" if collector.meta[:description]
-      puts "Author.....: #{collector.meta[:author]}"
-      puts "Key........: #{collector.sluggified_name}\n\n"
+      puts "Name............: #{collector.meta[:name]}"
+      puts "Description.....: #{collector.meta[:description]}" if collector.meta[:description]
+      puts "Author..........: #{collector.meta[:author]}"
+      puts "Key Requirements: #{collector.meta.key?(:require_keys) ? collector.meta[:require_keys].join(', ') : 'None'}"
+      puts "Key.............: #{collector.sluggified_name}\n\n"
       puts "--------------------------------------------------\n\n"
     end
     exit