Removed extra whitespace.
PEP fixes, added virtualenv to gitignore.
Merging
Merging
Merged from master. Added weight parameter to add_edge() method. Tests now account for the extra parameter.
Merged from master. Added weight parameter to add_edge() method. Tests now account for the extra parameter.
Added dijekstra's algo and associated test
Added skeltons for second algo.
Renamed function
Fixed merge conflicts
Added an implementation of the the floyd_warshall algorithm for finding the shortest path in a graph. Added the corresponding test.
Modified README to include resources used.
Merge pull request #2 from eyueld-codefellow/path

Path: Included code for dijekstra and floyd_warhall algorithm with the corresponding tests