Controls and gravity fixes
Ground shader interpolates textures by height
Added basic tree - practicing importing such meshes from blender
Delete commited log file

The log file isn't part of the project and will add noise if it changes.
.gitignore ignores all log files
Merge branch 'basic-textures-and-shaders'
Added function to find height at x,z from heightmap
Tiny gravity changes/fixes
I'm not sure what my last commit was, so this is all the stuff from then until nov 19
Merge resolution. Also replaced grass.jpg with slightly deifferent grass.jpg