File specification:

target.txt - target phoneme sequence
predicted.txt - predicted phoneme sequence to be aligned with target.txt
dist.csv - Matrix containing phoneme distance (French language)
phonemes.txt - file containing the indexes of all phonemes for the phoneme
		distance matrix.
Both target and predicted sequence files are stored in kaldi format, specific
for phoneme alignment.

Input:
$python dtw_phoneme.py <target.txt> <predicted.txt> <phonemes.txt> <dist.csv>

Output: 
	- Similarity score
	- DTW plot between the two sequences