v2.0.0

Breaking Changes:

• versions function parameter has been moved to output ae8bf53

output = {
  versions: [...]
};

resize(image, output, function(error, versions) {
  // result
});

New Features:

• global version quality option f2dc167
• global version prefix option d911bb5 (#3)
• global version path option d3c94a3 (#2)

Documentation:

• document local version quality option f2dc167
• format default value for options 5f937e8