New java files and updated Documentation

Documentation/AcceptanceTests/AcceptanceTest.docx

Documentation/AcceptanceTests/AcceptanceTest.pdf

...seProject/src/main/java/fixture/AuctionBeaterFixture.java

EclipseProject/src/main/java/fixture/AuctionFixture.java

EclipseProject/src/main/java/fixture/ItemFixture.java

EclipseProject/src/main/java/project/Auction.java

EclipseProject/src/main/java/project/AuctionBeater.java

EclipseProject/src/main/java/project/Bid.java

EclipseProject/src/main/java/project/Item.java

EclipseProject/src/main/java/project/ItemPicture.java

EclipseProject/src/main/java/project/User.java