bin/clouddns in clouddns-0.0.2 vs bin/clouddns in clouddns-0.0.3

@@ -7,14 +7,20 @@
 options = {
   :fog => {},
   :force => false
 }
 
-OptionParser.new do |opts|
-  opts.banner = "Usage: #{$0} [OPTIONS] [ACTION] FILES"
+option_parser = OptionParser.new do |opts|
+  opts.banner = [
+    "Usage: #{$0} [OPTIONS] print    FILES  # Pretty print contents of FILES",
+    "       #{$0} [OPTIONS] migrate  FILES  # Update DNS servers",
+    "       #{$0} [OPTIONS] zonefile FILES  # Print FILES as zone files",
+    "",
+    ""
+  ].join("\n")
 
-  opts.on('-p', '--provider provider', "Override DNS provider (AWS, Zerigo, etc)") do |provider|
+  opts.on('-p', '--provider provider', "Override DNS provider (AWS, bluebox, dnsimple, dnsmadeeasy, linode, slicehost, zerigo)") do |provider|
     options[:fog][:provider] = provider
   end
 
   opts.on('-f', '--force', 'Assume yes to all questions') do
     options[:force] = true
@@ -27,16 +33,29 @@
 
   opts.on_tail("-h", "--help", "Show this message") do
     puts opts
     exit
   end
-end.parse!
+end
 
+option_parser.parse!
+
 action = ARGV.slice!(0)
 files = ARGV
 
-raise "No action specified" unless action
-raise "No files specified" if files.empty?
+if !action
+  error = "No action specified"
+elsif files.empty?
+  error = "No files specified"
+else
+  error = nil
+end
+
+if error
+  puts error
+  puts option_parser
+  exit 1
+end
 
 action = Clouddns::Actions.by_name(action)
 
 zones = files.map do |file|
   dsl = Clouddns::DSL.parse_file(file)