This cleans the html5 client logs by removing the escaping doe by nginx.
To run sending output to STDOUT
./html5-log-cleaner.rb testdata/jul-23-html5-client.log.1
Sending output to file. Make sure the directory is present.
LOG_PATH=log/foo.log ./html5-log-cleaner.rb testdata/jul-23-html5-client.log.1