Fix spec error on running annoyance specs

When running ```build.sh``` this error happened:

```
*** Running annoyance gem specs
/Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:443:in `require': cannot load such file -- spec_helper.rb (LoadError)
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:443:in `block in requires='
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:443:in `map'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:443:in `requires='
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration_options.rb:27:in `block in configure'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration_options.rb:26:in `each'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/configuration_options.rb:26:in `configure'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/command_line.rb:21:in `run'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:80:in `run'
	from /Users/jmd/.rvm/gems/ruby-2.0.0-p247@tnbt/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:17:in `block in autorun'
```

This commit fixes it.