Bugfix - Changes axis for legend.
Added plot.close() statements to save memory images when using as imported classes with many plots
Made coverage_histogram.py set the x axis automatically based on the calculated median
Updated function default for use when imported
Fixed GC content axes to range from 1 to 100
Made genome fraction coverage set x max intelligently
Fixed help message
Made insert size plot scale x automatically
Updated qualimap readme
Merge pull request #18 from ewels/master

Better qualimap axes