Added note about install location for Linux, as well as noted that the...

Added note about install location for Linux, as well as noted that the scripts/addons folder should be created if it doesn't exist.

utils/exporters/blender/README.md

@@ -6,7 +6,7 @@ Assumes Blender version 2.60.
 
 ## Installation
 
-Copy the io_mesh_threejs folder to the scripts/addons folder. The full path is OS-dependent (see below).
+Copy the io_mesh_threejs folder to the scripts/addons folder. If it doesn't exist, create it. The full path is OS-dependent (see below).
 
 Once that is done, you need to activate the plugin. Open Blender preferences, look for
 Addons, search for `three`, enable the checkbox next to the `Import-Export: three.js format` entry.
@@ -25,6 +25,12 @@ Depends on where blender.app is. Assuming you copied it to your Applications fol
 
     /Applications/Blender/blender.app/Contents/MacOS/2.60/scripts/addons
 
+### Linux
+
+By default, this should look like:
+
+    /home/USERNAME/.blender/2.60/scripts/addons
+
 ## Usage
 
 Use the regular Import and Export menu within Blender, select `Three.js (js)`.