add properties file for configurations
add full commenting
add implementation for using startup file - UNTESTED
Merge remote-tracking branch 'origin/master'

Conflicts:
	Coursework1/src/Doctor.java
	Coursework1/src/Hospital.java
	Coursework1/src/HospitalAdministrator.java
	Coursework1/src/NoBedsException.java
	Coursework1/src/Patient.java