Initial version of the min-heap working with small unit test
Added remove (min) and decrease key functions to heap, as well as updating of the state heap index
Changed from g++ to clang++ and enabled c++11; also, added basic hash table and templated most of the code
Fixed merge conflicts
Fixed some issues with the hash table
Implemented a general Dijkstra search, and an example of it running on a 2D grid
Added an Environment3D framework for (x, y, z)-planning for Models in 3D
Merge remote-tracking branch 'jvisenti/master' into ER-GraphSearch
Merge pull request #3 from eratner/ER-GraphSearch

Basic graph search code
Merge branch 'master' of https://github.com/jvisenti/compgeo into RV-App