ajout du readme dans le repertoire cellfie et maj de ce repertoire

cellfie/README.md

+# Phenological Stages
+
+This repository is dedicated to the construction of  semantic resources (RDF dataset and OWL ontologies) that represent plant phenological development stages for agricultural practices. This work is part of the ANR D2KAB project. 
+
+BBCH-based Plant Phenological Description Ontology (ppdo) is an ontology that extends skos model to store bbch phenological scales and other scales. 
+More information about this ontology and associated datasets are available on http://ontology.irstea.fr/pmwiki.php/Site/Ppdo
+
+ppdo metadata are  published on the web at the uri http://ontology.inrae.fr/ppdo
+
+A sparql end point to query ppdo and related datasets are available at http://ontology.inrae.fr/ppdo/sparql
+
+The licence of ppdo is http://creativecommons.org/licenses/by/4.0/
+
+ppdo.owl is the version of ppdo in OWL/XML format to use with Protégé.
+
+ppdo.rdf is the version of the ontology in RDF/XML format to use with skos play.
+
+The ontology engineering process used the Linked Open Terminology (LOT) methodology.
+
+The engineering process was made using Protégé Cellfie plugin. 
+
+ppdo_vide.owl is the entry file used during cellfie transformation rules in order to produce ppdo.owl.
+All the files used during the generation of ppdo.owl are stored in Cellfie directory.
+The algorithm is detailled in the wiki PhenologicalStages
+
+
+
+## Phenological Scale of Grapevine
+
+The repository grapevine contains the file that describe the phenological scale of grapevine based on ppdo ontology.
+
+This dataset contains the 4 aligned scales of grapevine phenological stages. This work was made under the supervision of Xavier Delpuech from French Institute of Grapevine and Vine (IFV)
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