eds_TEM notebook has 0% composition after doing BSS

[k8macarthur]

In section 7 model fitting a quantification the composition values come out as zero when using blind source separation as the deconvolution method. For my demos I have changed this to NMF and the values come out reasonable. I can also multiply the BSS factor values by a number to making them greater than one. In the current format however the compositions come at as 0% for both elements.