Update FileManager.java

Gabe make sure to appropriately close any Streams, Readers, or Writers that you make everywhere in the program, otherwise to the program if the txt file "ClinicRecords.txt" is opened by a stream, reader, or writer in another part of the code than it cannot ever delete "ClinicRecords.txt" I modified your FileManager and the program is appropriately updating the patient comments now in Windows. I also changed FileManager to have all static methods and no constructor. This makes it a "static" class or utility class. All other classes can access its methods directly with FileManager.methodname(). This eliminated the "global" variables that you had to the FileManager. 

Try this out with arche and tell me if it still works.