These categories aren't needed...

README.md

@@ -15,16 +15,11 @@ More? irc.freenode.net #three.js
 
 #### Canvas ####
 
-Materials
-
 [![materials_reflection](http://mrdoob.github.com/three.js/assets/examples/27_materials_reflection.png)](http://mrdoob.github.com/three.js/examples/materials_reflection.html)
 [![materials](http://mrdoob.github.com/three.js/assets/examples/13_materials.png)](http://mrdoob.github.com/three.js/examples/materials.html)
 [![materials_depth](http://mrdoob.github.com/three.js/assets/examples/19_materials_depth.png)](http://mrdoob.github.com/three.js/examples/materials_depth.html)
 [![materials_normal](http://mrdoob.github.com/three.js/assets/examples/22_materials_normal.png)](http://mrdoob.github.com/three.js/examples/materials_normal.html)
 [![materials_video](http://mrdoob.github.com/three.js/assets/examples/24_materials_video.png)](http://mrdoob.github.com/three.js/examples/materials_video.html)
-
-Geometry
-
 [![interactive_cubes](http://mrdoob.github.com/three.js/assets/examples/11_interactive.png)](http://mrdoob.github.com/three.js/examples/interactive_cubes.html)
 [![camera_ortographic](http://mrdoob.github.com/three.js/assets/examples/10_orthographic.png)](http://mrdoob.github.com/three.js/examples/camera_orthographic.html)
 [![geometry_birds](http://mrdoob.github.com/three.js/assets/examples/08_birds.png)](http://mrdoob.github.com/three.js/examples/geometry_birds.html)
@@ -32,9 +27,6 @@ Geometry
 [![geometry_terrain](http://mrdoob.github.com/three.js/assets/examples/06_terrain.png)](http://mrdoob.github.com/three.js/examples/geometry_terrain.html)
 [![geometry_panorama](http://mrdoob.github.com/three.js/assets/examples/04_vr.png)](http://mrdoob.github.com/three.js/examples/geometry_panorama.html)
 [![geometry_cube](http://mrdoob.github.com/three.js/assets/examples/03_cube.png)](http://mrdoob.github.com/three.js/examples/geometry_cube.html)
-
-Particles
-
 [![particles_sprites](http://mrdoob.github.com/three.js/assets/examples/26_particles_sprites.png)](http://mrdoob.github.com/three.js/examples/particles_sprites.html)
 [![particles_random](http://mrdoob.github.com/three.js/assets/examples/02_random.png)](http://mrdoob.github.com/three.js/examples/particles_random.html)
 [![particles_wave](http://mrdoob.github.com/three.js/assets/examples/01_waves.png)](http://mrdoob.github.com/three.js/examples/particles_waves.html)
@@ -42,8 +34,6 @@ Particles
 
 #### WebGL ####
 
-Materials
-
 [![materials_shader_fresnel](http://mrdoob.github.com/three.js/assets/examples/28_materials_shaders_fresnel.png)](http://mrdoob.github.com/three.js/examples/materials_shaders_fresnel.html)
 [![materials_cars](http://mrdoob.github.com/three.js/assets/examples/25_materials_cars.png)](http://mrdoob.github.com/three.js/examples/materials_cars.html)
 [![materials_cubemap_refraction](http://mrdoob.github.com/three.js/assets/examples/18_materials_cubemap_refraction.png)](http://mrdoob.github.com/three.js/examples/materials_cubemap_refraction.html)
@@ -53,9 +43,6 @@ Materials
 [![materials_cubemap](http://mrdoob.github.com/three.js/assets/examples/14_materials_cubemap.png)](http://mrdoob.github.com/three.js/examples/materials_cubemap.html)
 [![materials_gl](http://mrdoob.github.com/three.js/assets/examples/20_materials_gl.png)](http://mrdoob.github.com/three.js/examples/materials_gl.html)
 [![materials_shaders](http://mrdoob.github.com/three.js/assets/examples/23_materials_shaders.png)](http://mrdoob.github.com/three.js/examples/materials_shaders.html)
-
-Geometry
-
 [![large_mesh](http://mrdoob.github.com/three.js/assets/examples/12_large_mesh.png)](http://mrdoob.github.com/three.js/examples/geometry_large_mesh.html)
 [![lights_pointlights](http://mrdoob.github.com/three.js/assets/examples/09_walthead.png)](http://mrdoob.github.com/three.js/examples/lights_pointlights.html)