Merge pull request #30 from AndrewMackle/NewBranch

Clean up Camera movement code to better work with tower placement
Tower Placement Diagrams

-Tower Placement Class Diagram has been created
-Tower Placement Sequence Diagram has been created
Merge pull request #31 from elroipablo/NewBranch

Tower Placement Diagrams
GridPlacement
Merge pull request #32 from elroipablo/NewBranch

GridPlacement
Improved Tower Placement

- improved the tower placement, now they cannot be place where there is
a tower already
- improved the camera view
-increased the size of the plane
- modified the tower prefabs
-different towers can now be selected
Merge pull request #33 from elroipablo/NewBranch

Improved Tower Placement
Merge pull request #1 from Venompaw/NewBranch

New branch