Travis CI: site documentation update at 2014-11-09 10:35:29 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/125adf1228ec550e4bd2aa4fbb1713e64839a03e

Message: Enhance Urho3D.pc file generation to support MSVC and MinGW better.
Simplify the pkg-config invocation example for MinGW cross-compiler since the Urho3D library name is already corrected. No need to sed anymore.