Merge pull request #9 from wltrimbl/master

Added sample visualizations to front page
added two columns to log output- AVCOV and AVGEN
Added median-coverage measurement
Changed axis labels slightly
Ignore kmers.log
Rough version of kmer-stratify table
Renamed example logfile
Make more quiet
Modularlizing stratify
Refactoring image filenames
xlabel, ylabel tidying
Consolidated plotting grid
Inadvertently changed some png renderings
Added rainbow visualizations 25 and 26
test-viz.. generates pngs
modified output format of kmers.lov
Fixed error calculating boundaries
whitespace cleanup
Unimplemented option is boolean
Support eps format