Added refrence to SoftBody and Bullet Physics Pitfalls articles

src/docs/asciidoc/jme3.adoc

@@ -213,6 +213,8 @@ Now that you understand the concepts, it's time to make the most of the jMonkeyE
 *  <<jme3/advanced/walking_character#,Walking Character>>
 *  <<jme3/advanced/ragdoll#,Ragdoll>>
 *  <<jme3/advanced/vehicles#,Vehicles>>
+*  <<jme3/advanced/softbody#,SoftBody>>
+*  <<jme3/advanced/bullet_pitfalls#,Bullet Physics Pitfalls>>
 //*  <<jme3/advanced/ray_and_sweep_tests#,Physics Rays and Sweep Tests>>
 *  link:http://www.youtube.com/watch?v=yS9a9o4WzL8[Video: Mesh Tool &amp; Physics Editor]