Add instruction to install Box2D header files. [ci skip]
Added brightness attribute to Light. Added separate equality test with and without epsilon to Color, similar to Vector2/3/4.
Use light's effective color for debug drawing.
Minor code formatting. Prefer machine word loop counter.
Travis CI: API documentation update at 2014-03-13 08:41:02 UTC.
[ci package]
Added documentation on light brightness and negative lights.
Apply node transform to collision shape, add CollisionCircle2D.[ci skip]
Add Lua binding and AngelScript Binding.[ci skip]
Add 2D physics sample in Lua and AngelScript. [ci skip]
Add 2D sprite to physics samples.[ci skip]
Add GetTexture function in Drawable2D.[ci skip]
Minor typo fix on documentation. [ci skip]
Minor refactoring on Urho3D common cmake module for setting GCC cflags.
[ci skip]
Cleanup code as it does not use Scene's attribute anymore.
Travis CI: API documentation update at 2014-03-14 11:42:25 UTC.
[ci package]
Fix uninitialize member var causing CollissionCircle2D to missbehave.
Fix partial init causing Editor to crash when loading 2D physics scene.