Update multifasta_to_otu.py for new quikr function

  * Removed an old comment from the quikr function
  * Load the trained matrix from multifasta main.
  * This will reduce load times as we only need
    to call it once
Write the comments in for the work to be done

Comment first, write code later! Also I fixed an erroneous space that
really didn't need to be there. Laid down the import for biopyton.

Created the basic iteration through our fasta files and added
loading of fasta file titles through biopython