Add Gephi Based Plotting

Plot results in Gephi to visualize output
various updates
Bug Fix + Adding Omega vs. Runtime

Reflected change in omega score location in the JSON file in this script

Added ability to limit metrics to only a specific dataset.
Added a plot of runtime vs. accuracy. Still needs some work to make it
nicer (algorithm type should be represented by color and not by text
label).
added separability test
enabled experiment for all ground truth files
Completed ground truth metrics comparisons

Fixes #22