Changed decoder back to original code, migrated the method to 'recolour' WZ frames using key frame channel into the colourizer module.

2) Added colourizer module to recolour grayscale video using keyframe chroma information

Recoloured WZ frames by simply using the chroma channels from previous frames (this could be considered a lower bounds for recolouring algorithm). Added a script to view the qcif video using vlc

Modified decoder so that the output video has all 3 channels. Key-frames are full-colour, while WZ-frames are shown in grayscale.

 1) Modified the format of executable print statements,
 2) changed output file type from '.y' to '.yuv', and
 3) modified the decoder to reconstruct the entire video sequence.

Tar'd and gzipped (VERY) large ldpca data files. Removed original un-gzipped directory, and added tar commands to Makefile