really add insulator clip model

(and fix .gitignore accordingly)

.gitignore

@@ -48,7 +48,6 @@ local.properties
 *_p.c
 *.ilk
 *.meta
-*.obj
 *.pch
 *.pdb
 *.pgc

extranodes/models/technic_insulator_clip.obj

@@ -0,0 +1,173 @@
+# Blender v2.72 (sub 0) OBJ File: ''
+# www.blender.org
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