Merge pull request #6 from blekinge/master

Merge code review and improvements, adding deduplication conversion
Merge pull request #7 from blekinge/master

Numerous bugs in the code I supplied you
Identification of input files in HDFS
Merge branch 'master' of https://github.com/openplanets/hawarp
README extended
README extended
README extended
Created ABOUT.md for microsite
Moved some info to ABOUT.md
Added SCAPE and OPF credit.
Added tagline to ABOUT.md.
Added tagline to README.md.
Update .travis.yml
Download snapshots from sonatype (should fix Jenkins build)