Add an example of using external OBJ models

Author: jonathanhogg

.gitattributes

@@ -0,0 +1 @@
+*.obj binary

examples/Makefile

@@ -3,7 +3,7 @@
 
 all: short long
 
-short: bauble.png canvas3d.png linelight.png solidgeometry.png textures.png translucency.png
+short: bauble.png canvas3d.png linelight.png solidgeometry.png teaset.png textures.png translucency.png
 
 long: bounce.png hoops.png physics.png smoke.png video.png
 
@@ -31,6 +31,9 @@ smoke.png: smoke.fl
 solidgeometry.png: solidgeometry.fl
 	flitter --offscreen --lockstep --fps=1 --runtime=1 --define "OUTPUT=$@" $<
 
+teaset.png: teaset.fl
+	flitter --offscreen --lockstep --fps=1 --runtime=1 --define "OUTPUT=$@" $<
+
 textures.png: textures.fl
 	flitter --offscreen --lockstep --fps=1 --runtime=1 --define "OUTPUT=$@" $<