added Grid and AStar usage test
merge last algorithms commits
Squashed 'external/algorithms/' changes from 62252c0..e20e8c2

e20e8c2 Merge branch 'fix_empty_result_astar' into develop_patched
73bb385 Always returns start and end nodes when a path is found in astar

git-subtree-dir: external/algorithms
git-subtree-split: e20e8c229a94c1959331272fce8375ee83037130
added Graph and Dijkstra usage test
adding install instructions
Squashed 'external/algorithms/' changes from e20e8c2..5b84025

5b84025 Merge branch 'fix_empty_result_astar' into develop_patched
8edf1e3 Always returns start and end nodes when a path is found in astar

git-subtree-dir: external/algorithms
git-subtree-split: 5b84025d80f3abf829cbd5e742ece59ceac2bb19
merge last algorithms commits
added versionning
bump version to 1.0.0
Merge branch 'release/1.0.0'