Loads the trajectory files e.g. XTC, DCD, TRJ together with the topology
        file as a MDAnalysis Universe. This will only be run if a trajectory has
        been submitted for analysis.
            Takes:
                * topology * - a topology file e.g. GRO, PDB, INPCRD, CARD, DMS
                * trajectory * - a trajectory file e.g. XTC, DCD, TRJ
            Output:
                * self.universe * - an MDAnalysis Universe consisting from the
                topology and trajectory file.

def load_trajectory(self,trajectory):
        """
        Loads the trajectory files e.g. XTC, DCD, TRJ together with the topology
        file as a MDAnalysis Universe. This will only be run if a trajectory has
        been submitted for analysis.
            Takes:
                * topology * - a topology file e.g. GRO, PDB, INPCRD, CARD, DMS
                * trajectory * - a trajectory file e.g. XTC, DCD, TRJ
            Output:
                * self.universe * - an MDAnalysis Universe consisting from the
                topology and trajectory file.
        """

        try:
            self.universe.load_new(trajectory)
        except IOError, ValueError:
            print "Check you trajectory file " + trajectory +"- it might be missing or misspelled."