Added basic OptionParser with Add and Change options
After realizing that OptionParser is depreciated, switch to argparse (again) and kept same arguments. In process of merging spotify_control and spotify_info.
Fixed --control functionality
Added modifier argument for character that seperates displays. Put display items in dictionary
Made d_values.keys() default values in display agrument. Catch NameError exceptions
Updated README, help argument, zsh file