Defined the class FreeSurface and a few of its properties.
This definition is still incomplete.
Class Defect: Added access function getCoordinateSystem
Class FreeSurface: Defining function imageForce (incomplete).
Completed definition on FreeSurface::imageForce
The imageForce function is implemented by creating an image dislocation
on an extended portion of the same slip plane, and the Peach-Koehler
force on the original dislocation due to the stress field of the image
dislocation is calculated. The image dislocation is then deleted.
Resolved default value conflicts
Merge pull request #32 from adhishm/version_0.0_simulateSingleSlipPlane_fixedTimeIncrement_freeSurface

Version 0.0 simulate single slip plane fixed time increment free surface