fixed placeBoats() and overlapping problem
.DS_Store
Merge branch 'master' into pamtree

Conflicts:
	ComputerPlayer.class
	ComputerPlayer.java
Merge pull request #39 from pamelawang/pamtree

Pamtree
Updated intro.svg file
Merge pull request #40 from pamelawang/pamtree

Updated intro.svg file
fixed up PlaceBoatPanel. All working.
Player's placeBoat() method. And deleted duplicat exception class.
placeBoat() = invalid for diagonal, wrong length, not within boundaries, and overlappin
Haven't changed much. GamePanel.
Working on GamePanel
Merge pull request #41 from pamelawang/master

Many things changed.