"Added button class and started re-adding menus."
Finished adding back in menus except for positioning
Filename changes to reflect dropbox image names.
Camera fixes its offset to prevent view clipping.
Camera zoom fix.
Floors tiling works again.
Abstracted the tiling functionality from existing Floor, Ladder, and Stair classes. Tiling objects should now extend TileableGameObject.
Camera can now follow a GameObject.
Camera control updated.
Added Camera coordinate conversion functions.
Used coordinate conversions to fix invention control errors while zoomed.
Added pausing to gameplay.
deleted a space
Merge branch 'feature/menu' of https://github.com/DAWacker/SleepyScientist into develop

Conflicts:
	SleepyScientist/SleepyScientist/Game1.cs
	SleepyScientist/SleepyScientist/SleepyScientist.csproj
Fixed errors produced by menu/develop merge.
git checkout wanted me to commit csproj file.
Fixed merge error.

Camera wasn't following scientist and invention selection when zoomed
didn't work.
Fixed another merge error.
Camera scrolling feature.

Also, fixes a bug with the ToGlobal function not providing the correct
value.
Use camera scrolling when invention is being placed.