Adding functionality for CPA (composite prosody score)
	modified:   README.md
		Updated the readme file
	modified:   intShift_analysis_1.m
		1. Added CPA calculation and visualization, enabled by the
		new 'cap' option
		2. The by-epoch plots (including the one for CPA) now show
		filled and unfilled circles, indicating signiifcant and
		non-significant change from the baseline, respectively.
		3. Added comments about optional arugments in the
		beginning