Implementation of SSSP virtal warp-based GPU kernel
Fixed the bug that caused the SSSP unit tests to fail when using a virtual warp length more than the GPU's warp
Merge pull request #1 from ahgharaibeh/sssp-vwarp-kernel

Fixed the bug that caused the SSSP unit tests to fail when using a virtu...
Fixed formatting and updated code structure
Merge pull request #17 from tahsinreza/sssp-vwarp-kernel

Implementation of SSSP virtal warp-based GPU kernel