Support reload by 'L' key

If you are editing URDF file, try 'l' key to reload the file!

v0.10.0

v0.10.0

v0.9.2

Change eye position

v0.9.0

This version supports texture, but it has some problems.
-d option is added to disable texture feature.

v0.8.2

v0.8.2

v0.8.1

v0.8.1

v0.8.0

Update k=0.8.0

v0.6.0: Support collision model

• fix cylinder model
• c key to toggle collision/visual element to be shown

v0.4.5

Fix appveyor

v0.4.1

Fix brew only on osx