Merge pull request #116 from fabienrohrer/master

Used the default grass texture of Webots instead
Removed usless mWalking->Process() in the gait manager for cross-compilation
Used the Gyro in the gait manager only if the balance is enable.
Merge pull request #117 from fabienrohrer/master

Fixed walk Makefile
Corrected indentation issue.
Merge pull request #118 from DavidMansolino/GaitImproved

Improved Gait Manager