```ruby
require 'rack'

module SecondMate

  class ResponseNotFound < Exception
  end

  @config = {
   :matcher_pattern => '_*_'
  }

  def self.method_missing(m, *attrs)
    # Ease access to @config
    if @config[m.to_sym]
      @config[m.to_sym]
    elsif @config[m.chomp('=').to_sym]
      @config[m.chomp('=').to_sym] = attrs[0]
    else
      super
    end
  end

  def self.app(options = {})
    Rack::Builder.new {
      use Rack::CommonLogger
      use SecondMate::Counter
      
      run Rack::Cascade.new([SequenceFinder.new(options[:root]), NaiveFinder.new(options[:root]), MatchFinder.new(options[:root])])
    }.to_app
  end

  def self.run(options = {})
    Rack::Handler.default.run(
      app({:root => ''}.update(options)),
      {:Port => 4040}.update(options)
    )
  end

end

require 'second_mate/request'
require 'second_mate/counter'
require 'second_mate/finder'
require 'second_mate/naive_finder'
require 'second_mate/sequence_finder'
require 'second_mate/match_finder'
```

Add precautionary conversion in config handling
user
```ruby
require 'rack'

module SecondMate

  class ResponseNotFound < Exception
  end

  @config = {
   :matcher_pattern => '_*_'
  }

  def self.method_missing(m, *attrs)
    # Ease access to @config
    if @config[m.to_sym]
      @config[m.to_sym]
    elsif @config[m.to_s.chomp('=').to_sym]
      @config[m.to_s.chomp('=').to_sym] = attrs[0]
    else
      super
    end
  end

  def self.app(options = {})
    Rack::Builder.new {
      use Rack::CommonLogger
      use SecondMate::Counter
      
      run Rack::Cascade.new([SequenceFinder.new(options[:root]), NaiveFinder.new(options[:root]), MatchFinder.new(options[:root])])
    }.to_app
  end

  def self.run(options = {})
    Rack::Handler.default.run(
      app({:root => ''}.update(options)),
      {:Port => 4040}.update(options)
    )
  end

end

require 'second_mate/request'
require 'second_mate/counter'
require 'second_mate/finder'
require 'second_mate/naive_finder'
require 'second_mate/sequence_finder'
require 'second_mate/match_finder'
```
assistant