Changes 2/18/14

NSF:

• Program now finds the xml anywhere within the directory tree of the zip file
• Began adding checks to see if xml files have already been downloaded.  If so, the local copy will be used
• Cleaned up console output by using sys.stdout.write() with sys.stdout.flush() to overwrite one line instead of filling the entire console with output on new lines.
• One problem I am having is that many of the full xml files I am working with do not mention NSF in the entire document, so sometimes it is hard to tell if things work correctly.
• In order to fix the problem of tags differing as time goes on, I will have to find and look at the DTD changelogs.