bin/opensource in opensource-0.6.0 vs bin/opensource in opensource-0.6.1

@@ -1,24 +1,24 @@
 #!/usr/bin/env ruby
 # encoding: UTF-8
 
 require 'optparse'
-require_relative '../lib/opensource'
+require 'open_source'
 
 options = {}
 
-OptionParser.new do |opts|
+option_parser = OptionParser.new do |opts|
   opts.banner = "Usage: #{File.basename($PROGRAM_NAME)} OPTIONS"
   opts.separator ''
   opts.separator 'Specific options:'
 
   opts.on('-s', '--setup', 'Setup user credentials in ~/.osrc file') do |s|
-    Opensource::Owner.set_credentials
+    OpenSource::Owner.set_credentials
     exit
   end
 
-  opts.on('-l', '--license LICENSE', Opensource::LICENSES, "LICENSE can be #{Opensource::LICENSES.join('|')}") do |l|
+  opts.on('-l', '--license LICENSE', OpenSource::LICENSES, "LICENSE can be #{OpenSource::LICENSES.join('|')}") do |l|
     options[:license] = l
   end
 
   opts.on('-a', '--append README', 'Append LICENSE content to README file') do |a|
     options[:append] = a
@@ -26,22 +26,28 @@
 
   opts.separator ''
   opts.separator 'Common options:'
 
   opts.on_tail('-v', '--version', 'Print the version') do
-    puts Opensource::VERSION
+    puts OpenSource::VERSION
     exit
   end
 
   opts.on_tail('-h', '--help', 'Show this message') do
     puts opts
     exit
   end
-end.parse!
+end
 
 begin
-  Opensource::License.new(options).process
-rescue Opensource::Error => e
-  # TODO: Make sure the above call raises only Opensource::Error
+  option_parser.parse!
+  if options.empty?
+    puts option_parser
+    exit 1
+  end
+
+  OpenSource::License.new(options).process
+rescue OpenSource::Error => e
+  # TODO: Make sure the above call raises only OpenSource::Error
   puts "Error: #{e.message}"
   exit 1
 end