Refactors social_network; Adds handful commands  and
> levenshtein-distance@0.0.1 test /Users/pablo/workspace/levenshtein
> mocha --reporter list --compilers coffee:coffee-script

    Array #minimum returns the minimum value: [2K[0G  ✓ Array #minimum returns the minimum value: 1ms
    Levenshtein #levenshteinDistance performs a deletion: [2K[0G  ✓ Levenshtein #levenshteinDistance performs a deletion: 1ms
    Levenshtein #levenshteinDistance performs an insertion: [2K[0G  ✓ Levenshtein #levenshteinDistance performs an insertion: 0ms
    Levenshtein #levenshteinDistance performs a substituition: [2K[0G  ✓ Levenshtein #levenshteinDistance performs a substituition: 0ms

  ✔ 4 tests complete (3ms); Renames samples to examples