Add `xml2js` dependency
Remove Python wrapper
Remove generated JavaScript
Add basic ImageMagick implementation
Ignore `npm-debug.log`
Fix repository URL
Fixup numTiles
Add progress bar
Ignore Mac OS X system files
Update installation instructions
Add test instructions
Add `writeManifest` method
Add comments
Remove progress bar
Merge pull request #3 from openzoom/1-imagemagick

Add ImageMagick support