Squashed commit of the following:

commit 430b9762c436f180db8686407b5002cb4f71e8b9
Author: Dermot Haughey <hderms@gmail.com>
Date:   Tue Jan 15 19:36:00 2013 -0600

    Add test

commit b9adb4d916ae1cf897ea2c1f39f5ad0c0def4460
Author: Dermot Haughey <hderms@gmail.com>
Date:   Tue Jan 15 19:35:50 2013 -0600

    Cleanup of code

commit 8e8a7873b48e956e4642d31265dc767b5fafb096
Author: Dermot Haughey <hderms@gmail.com>
Date:   Tue Jan 15 19:25:42 2013 -0600

    Make changes to add option
Update lib/builder/xmlbase.rb
Merge branch 'fix_issue_33' of https://github.com/hderms/builder into nil

* 'fix_issue_33' of https://github.com/hderms/builder:
  Update lib/builder/xmlbase.rb
  Squashed commit of the following:
Cleaned up test case.
Cleaned up explicit nil code a wee bit.
Remove extraneous white spaces.