Add citation file [WIP]

CITATION.cff

+cff-version: 1.0.3
+message: If you use this software, please cite it as below.
+authors:
+  - family-names: Julienne
+    given-names: Hanna
+  - family-names: Lechat
+    given-names: Pierre
+  - family-names: Guillemot
+    given-names: Vincent
+  - family-names: Lasry
+    given-names: Carla
+  - family-names: Yao
+    given-names: Chunzin
+  - family-names: Laville
+    given-names: Vincent
+  - family-names: Vilhjalmsson
+    given-names: Bjarni
+  - family-names: Ménager
+    given-names: Hervé
+    orcid: https://orcid.org/0000-0002-7552-1009
+  - family-names: Aschard
+    given-names: Hugues
+    orcid: https://orcid.org/0000-0002-7554-6783
+title: JASS
+#version: TODO
+#doi: TODO
+#date-released: TODO
+references:
+  - type: article
+    authors:
+      - family-names: Julienne
+        given-names: Hanna
+      - family-names: Lechat
+        given-names: Pierre
+      - family-names: Guillemot
+        given-names: Vincent
+      - family-names: Lasry
+        given-names: Carla
+      - family-names: Yao
+        given-names: Chunzin
+      - family-names: Laville
+        given-names: Vincent
+      - family-names: Vilhjalmsson
+        given-names: Bjarni
+      - family-names: Ménager
+        given-names: Hervé
+        orcid: https://orcid.org/0000-0002-7552-1009
+      - family-names: Aschard
+        given-names: Hugues
+        orcid: https://orcid.org/0000-0002-7554-6783
+    title: "JASS: Command Line and Web interface for the joint analysis of GWAS results"
+    year: 2019
+    doi: 10.1101/714832
+    url: https://doi.org/10.1101/714832
\ No newline at end of file