Update README.md

Before running any of these classes, it is required that you setup the config.properties files or passing in the properties through the Java system properties.
- ingest.sh: Uses a rest service to retrieve text files and stores them at the location provided.
    o jt.output.path: use the prefix hdfs:/// if you want the files stored in Hadoop or blank if locally
    o jt.input.uri: use the provided URL to retrieve the data
    o jt.preserve.filepath: boolean true/false if you want to use the URL path as part of the file destination path.
- index.sh: Only uses one parameter. This is the directory path to recursively iterate through to include in the
ElasticSearch index.