Added README.md

README.md

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+JPMML-Biogeme [![Build Status](https://github.com/jpmml/jpmml-biogeme/workflows/maven/badge.svg)](https://github.com/jpmml/jpmml-biogeme/actions?query=workflow%3A%22maven%22)
+=============
+
+Java library and command-line application for converting [Biogeme](https://biogeme.epfl.ch/) discrete choice models to PMML.
+
+# Installation #
+
+Enter the project root directory and build using [Apache Maven](https://maven.apache.org/):
+
+```
+mvn clean install
+```
+
+The build produces a library JAR file `pmml-biogeme/target/pmml-biogeme-1.0-SNAPSHOT.jar`, and an executable uber-JAR file `pmml-biogeme-example/target/pmml-biogeme-example-executable-1.0-SNAPSHOT.jar`.
+
+# Usage #
+
+A typical workflow can be summarized as follows:
+
+1. Use Python to conduct a Biogeme experiment.
+2. Construct a `dict` holding the Biogeme model and the Biogeme estimation results, and save it in `pickle` data format to a file in local filesystem.
+3. Use the JPMML-Biogeme command-line application to turn the Pickle file to a PMML file.
+
+### The Python side of operations
+
+Conducting a Biogeme experiment:
+
+```python
+from biogeme.biogeme import BIOGEME
+from biogeme.models import loglogit
+
+import joblib
+
+V, availability, Choice = scenario()
+
+model = loglogit(V, availability, Choice)
+
+# Save the model component
+# The internal state of the model is modified during the BIOGEME.estimate() method call, rendering it un-pickleable later on
+joblib.dump(model, "_model.pkl")
+
+biogeme = BIOGEME(database, model)
+
+results = biogeme.estimate()
+
+# Save the estimation results component
+joblib.dump(results, "_results.pkl")
+```
+
+Constructing a `dict` holding the Biogeme model and the Biogeme estimation results:
+
+```python
+import joblib
+
+experiment = {
+	"model" : joblib.load("_model.pkl"),
+	"results" : joblib.load("_results.pkl")
+}
+
+joblib.dump(experiment, "experiment.pkl")
+```
+
+### The JPMML-Biogeme side of operations
+
+Converting the Biogeme experiment Pickle file `experiment.pkl` to a PMML file `experiment.pmml`:
+
+```
+java -jar pmml-biogeme-example/target/pmml-biogeme-example-executable-1.0-SNAPSHOT.jar --pkl-input experiment.pkl --pmml-output experiment.pmml
+```
+
+Getting help:
+
+```
+java -jar pmml-biogeme-example/target/pmml-biogeme-example-executable-1.0-SNAPSHOT.jar --help
+```
+
+# License #
+
+JPMML-Biogeme is licensed under the terms and conditions of the [GNU Affero General Public License, Version 3.0](https://www.gnu.org/licenses/agpl-3.0.html).
+
+If you would like to use JPMML-Biogeme in a proprietary software project, then it is possible to enter into a licensing agreement which makes JPMML-Biogeme available under the terms and conditions of the [BSD 3-Clause License](https://opensource.org/licenses/BSD-3-Clause) instead.
+
+# Additional information #
+
+JPMML-Biogeme is developed and maintained by Openscoring Ltd, Estonia.
+
+Interested in using [Java PMML API](https://github.com/jpmml) software in your company? Please contact [[email protected]](mailto:[email protected])