code: function( index, callback ) {
  
          var scope = this;
  
          var shot = scope.shots[ index|0 ];
  
          if( ! shot ) {
  
              throw new Error(
                  "Shot number " + index + " not found"
              );
  
              return;
  
          }
  
          return shot;
  
      }
docs: Get shot instances from cache index
  
  @method getShot
  
  @param {Number} shot Index of shots called
  @param {Function} callback Returns a call from FS.readFile data
  
  @throws Error if shot at index not found
  
  @return {Boolean}