Update to Hexo 3.0

Update to make code more similar to existing hexojs plugins.

In theory should work with previous versions of hexojs, but forcing version to 3.0.

index.js

@@ -1,66 +1 @@
-var level = require('level')
-  , s3sync = require('s3-sync')
-  , readdirp = require('readdirp')
-
-
-
-var public_dir = hexo.config.public_dir || './public';
-
-
-hexo.extend.deployer.register('s3', function (args, callback) {
-  var config = hexo.config.deploy;
-
-  config.aws_key = config.aws_key || process.env.AWS_KEY;
-  config.aws_secret = config.aws_secret || process.env.AWS_SECRET;
-
-  if (!config.bucket || !config.aws_key || !config.aws_secret){
-    var help = [
-      'You should configure deployment settings in _config.yml first!',
-      '',
-      'Example:',
-      '  deploy:',
-      '    type: s3',
-      '    bucket: <bucket>',
-      '    [aws_key]: <aws_key>        # Optional, if provided as environment variable',
-      '    [aws_secret]: <aws_secret>  # Optional, if provided as environment variable',
-      '    [concurrency]: <concurrency>',
-      '    [region]: <region>          # See https://github.com/LearnBoost/knox#region',
-      '',
-      'For more help, you can check the docs: ' + 'https://github.com/joshstrange/hexo-deployer-s3'
-    ];
-
-    console.log(help.join('\n'));
-    return callback();
-  }
-
-  var files = readdirp({
-      root: public_dir,
-      entryType: 'both'
-  });
-
-  if(!config.concurrency)
-  {
-    config.concurrency = 8;
-  }
-
-  // Takes the same options arguments as `knox`,
-  // plus some additional options listed above
-  var uploader = s3sync({
-      key: config.aws_key
-    , secret: config.aws_secret
-    , bucket: config.bucket
-    , concurrency: config.concurrency
-    , region: config.region
-  }).on('data', function(file) {
-    console.log(file.fullPath + ' -> ' + file.url)
-  }).on('end', function() {
-    console.log('Done!');
-    callback();
-  }).on('fail', function(err) {
-    console.log(err)
-  });
-
-  files.pipe(uploader);
-  
-
-});
+hexo.extend.deployer.register('s3', require('./lib/deployer'));