code: function collectionDrop(name) {
          if ( typeof(collections[ this['_collection'] ]) == 'undefined' ) {
              throw new Error('Collection `'+name+'` not found')
          }
  
          delete entities[ this['_collection'] ]; // delete entity
          delete collections[ this['_collection'] ]; // delete data
  
          storage.setItem(this['_bucket'], JSON.stringify(collections));
      }
docs: Drop collection
  
  @param {string} name