Changes

* A typical example to reduce and extract photomery from Mookodi data would be something like this:

python TEA-Phot.py SAAO Mookodi MKD --bias MKD --flat MKD --image_dir /full/path/to/science/fits/files/ --bias_dir /full/path/to/bias/fits/files/ --flat_dir /full/path/to/flat/fits/files/ --out_dir /full/path/to/chosen/output/directory/ --do_plot True --source_sigma 1.5

* Wait for window to appear and select target and comparison star with mouse-clicks.

* Follow further prompts from the pipeline for inputs (aperture size etc.) in the terminal.