fixed TypeError in alignmentGraph
Merge pull request #268 from bamueh/alignment-graph-error-267

fixed TypeError in alignmentGraph

Fixes #267
Added a readClass argument to FastaReads in place of a type argument.
added function to summarize the bases at a specific position in a fasta file
added bin script to summarize bases at a given position
commiting to switch
corrections
added functions and tests to calculate distance between amino acid codons.
added tests to calculate distance between amino acid codons.
Move summarize position into Reads class.
Merge pull request #2 from terrycojones/summarize-bases

Move summarize position into Reads class.
Merge pull request #270 from bamueh/master

Function to summarize bases at a given position in a fasta file
commiting to merge
changes to codonInformation, tests and bin script
made changes
Merge pull request #271 from bamueh/codon-distance

Added functions to calculate codon distance
added amino acid details to aa.py
Neaten aa property details.
Merge pull request #272 from bamueh/properties-into-aa

Added amino acid details to aa.py
Hopefully corrected error with HSP frame in graphics.py