Merge pull request #4 from umd-mith/master

Spelling/case corrections
adjust wrapping in readme; remove debugging code from filter
wrap paragraphs at 80 columns; add notice of license
wrap paragraphs at 80 columns
better use of temporary file directory
clean up the code/comments a bit
clean up code and tests a bit
change xml2brl to file2brl
clean up readme a bit
wrap at 80 columns; add notice about security groups for AMI deployment
Merge pull request #19 from jgsmith/master

general cleanup of documentation and use of temporary files