exe/benchmark-driver in benchmark_driver-0.9.0 vs exe/benchmark-driver in benchmark_driver-0.9.1

@@ -10,10 +10,10 @@
 config = BenchmarkDriver::Config.new.tap do |c|
   executables = []
   bundler = false
   parser = OptionParser.new do |o|
     o.banner = "Usage: #{File.basename($0, '.*')} [options] [YAML]"
-    o.on('-r', '--runner [TYPE]', 'Specify runner type: ips, time, memory (default: ips)') do |d|
+    o.on('-r', '--runner [TYPE]', 'Specify runner type: ips, time, memory, once (default: ips)') do |d|
       abort '-r, --runner must take argument but not given' if d.nil?
       c.runner_type = d
     end
     o.on('-o', '--output [TYPE]', 'Specify output type: compare, simple, markdown (default: compare)') do |out|
       abort '-o, --output must take argument but not given' if out.nil?