Merge pull request #3 from joshuamataaraya/Joshua

Nodo
Merge pull request #4 from joshuamataaraya/manuel

Manuel
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Delete Arbol.java
Delete arbol.java
Delete GraficionArbol.java
Delete Nodo.java
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Merge pull request #5 from joshuamataaraya/Joshua

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Merge branch 'manuel' of https://github.com/joshuamataaraya/graficacionArbol.git into manuel