renamed file.

will support multiple embedding algorithms.
Renamed force-atlas-2 files.'
Updated makefile.
Updated includes.
Updated runbatch from shared-mem-repulsion branch.
Added yifan-hu target.
Removed double free.
Added support for yifan-hu embedding.
Added runscript.
File quota exceeded. Removing large inputs.
Merged with develop
Merge branch 'feature/yifan-hu' into develop