Catch Throwable in ExtractionTask

This ensures that all exceptions that might occur during processing are logged
Merge pull request #17 from sebp/catch_throwable

Catch Throwable in ExtractionTask
added @suppress warning annotation
added entry in readme
Quote file names in output file
Merge pull request #18 from sebp/quote_filename

Quote file names in output file
merged
Merge github/master
added entry in readme
version change