Add initial files.

.flake8

+[flake8]
+
+max-line-length = 101
+ignore = E306, E402, E128, E722, E731, E741, F812, F822, F403, F401, W504, W605

LICENSE

+Copyright (c) 2018-2019, Marcel Rieger
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its contributors
+  may be used to endorse or promote products derived from this software without
+  specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

+# Lorentz Boost Network (LBN) [![pipeline status](https://git.rwth-aachen.de/3pia/lbn/badges/master/pipeline.svg)](https://git.rwth-aachen.de/3pia/lbn/commits/master)
+
+TensorFlow implementation of the Lorentz Boost Network from [arXiv:XXXX.XXXXX [hep-ex]](https://arxiv.org/abs/XXXX.XXXXX).
+
+Original repository: [git.rwth-aachen.de/3pia/lbn](https://git.rwth-aachen.de/3pia/lbn)
+
+
+### Usage example
+
+```python
+from lbn import LBN
+
+# initialize the LBN, set 10 combinations and pairwise boosting
+lbn = LBN(10, boost_mode=LBN.PAIRS)
+
+# create a feature tensor based on input four-vectors
+features = lbn(four_vectors)
+
+# use the features as input for a subsequent, application-specific network
+...
+```
+
+
+### Installation and dependencies
+
+Via [pip](https://pypi.python.org/pypi/lbn):
+
+```bash
+pip install lbn
+```
+
+NumPy and TensorFlow are the only dependencies.
+
+
+### Testing
+
+Tests should be run for Python 2 and 3. The following commands assume you are root directory of the LBN respository:
+
+```bash
+python -m unittest test
+
+# or via docker, python 2
+docker run --rm -v `pwd`:/root/lbn -w /root/lbn tensorflow/tensorflow:latest python -m unittest test
+
+# or via docker, python 3
+docker run --rm -v `pwd`:/root/lbn -w /root/lbn tensorflow/tensorflow:latest-py3 python -m unittest test
+```
+
+
+### Contributing
+
+If you like to contribute, we are happy to receive pull requests. Just make sure to add new test cases and run the tests. Also, please use a coding style that is compatible with our `.flake8` config.
+
+
+### Development
+
+- Original source hosted at [RWTH GitLab](https://git.rwth-aachen.de/3pia/lbn)
+- Report issues, questions, feature requests on [RWTH GitLab Issues](https://git.rwth-aachen.de/3pia/lbn/issues)