Bones Not Connected? I've made this model with bones but when i try to animate the model by moving or rotating a bone it disconnects from another. How do i get a bone so when i rotate it its still connected to another bone?

Bone before rotation:



Bone after rotation:



I have no idea why this is happening i thought bones were supposed to be connected. I have been researching this problem for hours but this nothing about this, it doesn't look like anyone else has this problem.
You have to go to edit mode, select the two bones, Ctrl+P> Connected.

Also when you have added a bone, and then you go to edit mode. Select the tip of the bones and extrude it with E, then the bones are automatically parented to each other.