code: function getImageSizeForSource(editor, src, callback) {
  		var fileContent;
  		var au = require('actionUtils');
  		if (src) {
  			// check if it is data:url
  			if (/^data:/.test(src)) {
  				fileContent = require('base64').decode( src.replace(/^data\:.+?;.+?,/, '') );
  				return callback(au.getImageSize(fileContent));
  			}
  			
  			var file = require('file');
  			var absPath = file.locateFile(editor.getFilePath(), src);
  			if (absPath === null) {
  				throw "Can't find " + src + ' file';
  			}
  			
  			file.read(absPath, function(err, content) {
  				if (err) {
  					throw 'Unable to read ' + absPath + ': ' + err;
  				}
  				
  				content = String(content);
  				callback(au.getImageSize(content));
  			});
  		}
  	}
docs: Returns image dimensions for source
  @param {IEmmetEditor} editor
  @param {String} src Image source (path or data:url)