icon and category puglin update

change category of kettle plugin to "LinkedDataBR - Graph"
Add GraphSemanticLevelStep and GraphSparqlEndpoint

Add GraphSemanticLevelStep and Rename Sparqlendpoint to
GraphSparqlEndpoint
Rename SparqlEndpoint to GraphSparqlEnpoint

Removing old sparqlenpoint files
Remove eclipse project files from sync
private Model recreateGraph(Object model)

Recreates the Graph from the previous step
Atualização das dependências do Kettle para funcionar com Pentaho 5.1.0
Atualizações diversas

Removendo arquivos da lista de sincronização e atualização de developers
Limpando sincronização

Retirando as pastas "target" e ".settings" e ".classpath" e ".project"
Read SemanticLevelFramework and LOV xml

Incorporated the Camila`s code
During steps application use, some bugs were fixed
README step descriptions update
README steps descriptions update
Merge pull request #1 from Kellli/master

GraphSparqlEnpoint and GraphSemanticLevelMarker