Merge pull request bulletphysics#557 from erwincoumans/master

add a Pendulum example that is also used as unit test.

Update README.md

Merge pull request bulletphysics#397 from erwincoumans/master

simple lua script test, fix relative path issue in urdf importer

Merge pull request bulletphysics#381 from erwincoumans/master

test again, for mac travis support

Merge pull request bulletphysics#369 from erwincoumans/master

use wall-time delta time for examples, fix btDbvt (disable memmove)

fix double precision, and remove alloca

increase mass of the load, to show benefits of direct MLCP solver
move damping back to original location