Return a dictionary with the phononwebsite format:
        http://henriquemiranda.github.io/phononwebsite

def as_phononwebsite(self):
        """
        Return a dictionary with the phononwebsite format:
        http://henriquemiranda.github.io/phononwebsite
        """
        d = {}

        #define the lattice
        d["lattice"] = self.structure.lattice._matrix.tolist()
      
        #define atoms
        atom_pos_car = []
        atom_pos_red = []
        atom_types = []
        for site in self.structure.sites:
            atom_pos_car.append(site.coords.tolist())
            atom_pos_red.append(site.frac_coords.tolist())
            atom_types.append(site.species_string)

        #default for now
        d["repetitions"] = get_reasonable_repetitions(len(atom_pos_car))
    
        d["natoms"] = len(atom_pos_car)
        d["atom_pos_car"] = atom_pos_car
        d["atom_pos_red"] = atom_pos_red
        d["atom_types"] = atom_types
        d["atom_numbers"] = self.structure.atomic_numbers
        d["formula"] = self.structure.formula
        d["name"] = self.structure.formula

        #get qpoints
        qpoints = []
        for q in self.qpoints:
            qpoints.append(list(q.frac_coords))
        d["qpoints"] = qpoints

        # get labels
        hsq_dict = collections.OrderedDict()
        for nq,q in enumerate(self.qpoints):
            if q.label is not None:
                hsq_dict[nq] = q.label

        #get distances
        dist = 0
        nqstart = 0
        distances = [dist]
        line_breaks = []
        for nq in range(1,len(qpoints)):
            q1 = np.array(qpoints[nq])
            q2 = np.array(qpoints[nq-1])
            #detect jumps
            if ((nq in hsq_dict) and (nq-1 in hsq_dict)):
                if (hsq_dict[nq] != hsq_dict[nq-1]):
                    hsq_dict[nq-1] += "|"+hsq_dict[nq]
                del hsq_dict[nq]
                line_breaks.append((nqstart,nq))
                nqstart = nq
            else:
                dist += np.linalg.norm(q1-q2)
            distances.append(dist)
        line_breaks.append((nqstart,len(qpoints)))
        d["distances"] = distances
        d["line_breaks"] = line_breaks
        d["highsym_qpts"] = list(hsq_dict.items())

        #eigenvalues
        thz2cm1 = 33.35641
        bands = self.bands.copy()*thz2cm1
        d["eigenvalues"] = bands.T.tolist()

        #eigenvectors
        eigenvectors = self.eigendisplacements.copy()
        eigenvectors /= np.linalg.norm(eigenvectors[0,0])
        eigenvectors = eigenvectors.swapaxes(0,1)
        eigenvectors = np.array([eigenvectors.real, eigenvectors.imag])
        eigenvectors = np.rollaxis(eigenvectors,0,5)
        d["vectors"] = eigenvectors.tolist()
 
        return d