Initial Parquet file viewer.
Parquet file viewer now working. Replace Avro 1.4 JAR in HDFS viewer with Avro 1.7.4 JAR to fix API mismatch issue.
Style changes.
Catch Throwable in ParquetFileViewer in order to log any other exception if they are thrown.
Merge pull request #10 from davidzchen/parquet_hdfs_viewer

Parquet HDFS viewer.
Thanks, David.