Huffman Encoder and Decoder

Simple huffman encoder and decoder for files encoded in 'utf-8' (most text files).
I built this after watching an interesting video on Huffman encoding here which I found really cool and interesting, so I wanted to write my own version of a simple Huffman encoder and decoder.

Usage:

Encode a file:

python huffman.py -e <inputfile> [outputfile] outputfile name is optional, default will be inputfile name followed by ".huff"

Decode a file:

python huffman.py -d <inputfile> [outputfile] outputfile name is optional, default will be inputfile name followed by ".txt"