update citations to the JOSS paper that's about to be published

Author: artgoldberg

README.md

@@ -72,7 +72,7 @@ The package is released under the [MIT license](LICENSE).
 ## Citing *DE-Sim*
 Please use the following reference to cite *DE-Sim*:
 
-Arthur P. Goldberg & Jonathan Karr. DE-Sim: an object-oriented, discrete-event simulation tool for data-intensive modeling of complex systems in Python. Journal of Open Source Software. 2020 Nov. In press.
+Arthur P. Goldberg & Jonathan Karr. (2020). [DE-Sim: an object-oriented, discrete-event simulation tool for data-intensive modeling of complex systems in Python. Journal of Open Source Software, 5(55), 2685.](https://doi.org/10.21105/joss.02685)
 
 ## Contributing to *DE-Sim*
 We enthusiastically welcome contributions to *DE-Sim*! Please see the [guide to contributing](CONTRIBUTING.md) and the [developer's code of conduct](CODE_OF_CONDUCT.md).

codemeta.json

@@ -22,7 +22,8 @@
             "affiliation": "Icahn Institute for Data Science and Genomic Technology and Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA"
         }
     ],
-    "citation": null,
+    "citation": https://doi.org/10.21105/joss.02685
+    ,
     "readme": "https://github.com/KarrLab/de_sim/blob/master/README.md",
     "license": "https://spdx.org/licenses/MIT",
     "isAccessibleForFree": true,

docs/about.rst

@@ -16,7 +16,7 @@ Citing *DE-Sim*
 
 Please use the following reference to cite *DE-Sim*:
 
-Arthur P. Goldberg & Jonathan Karr. DE-Sim: an object-oriented, discrete-event simulation tool for data-intensive modeling of complex systems in Python. Journal of Open Source Software. 2020 Nov. In press.
+Arthur P. Goldberg & Jonathan Karr. (2020). `DE-Sim: an object-oriented, discrete-event simulation tool for data-intensive modeling of complex systems in Python. Journal of Open Source Software, 5(55), 2685. <https://doi.org/10.21105/joss.02685>`_
 
 ------------------------
 Contributing to *DE-Sim*