Acknowledgements required by BigMAP (#309)

Add acknowledgements required by BigMAP.
Moreover, the MIT license is added as well.

LICENSE

@@ -0,0 +1,8 @@
+The MIT License (MIT)
+Copyright (c) 2021, AiiDAlab team
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -42,12 +42,10 @@ See [above](#for-developers) for notes on how to release updates to the [`aiidal
 
 ## Acknowledgements
 
-This work is supported by the
-[MARVEL National Centre for Competency in Research](<http://nccr-marvel.ch>) funded by the [Swiss National Science Foundation](<http://www.snf.ch/en>),
+This project has received funding from the European Union’s [Horizon 2020 research and innovation programme](https://ec.europa.eu/programmes/horizon2020/en) under grant agreement [No 957189](https://cordis.europa.eu/project/id/957189). The project is part of BATTERY 2030+, the large-scale European research initiative for inventing the sustainable batteries of the future.
+Also supported by the [MARVEL National Centre for Competency in Research](<http://nccr-marvel.ch>) funded by the [Swiss National Science Foundation](<http://www.snf.ch/en>),
 the MARKETPLACE project funded by [Horizon 2020](https://ec.europa.eu/programmes/horizon2020/) under the H2020-NMBP-25-2017 call (Grant No. 760173),
-as well as by the [MaX
-European Centre of Excellence](<http://www.max-centre.eu/>) funded by the Horizon 2020 EINFRA-5 program,
-Grant No. 676598.
+as well as by the [MaX European Centre of Excellence](<http://www.max-centre.eu/>) funded by the Horizon 2020 EINFRA-5 program, Grant No. 676598.
 
 <div style="text-align:center">
  <img src="miscellaneous/logos/MARVEL.png" alt="MARVEL" height="75px">

setup.cfg

@@ -7,6 +7,8 @@ long_description_content_type = text/markdown
 url = https://github.com/aiidalab/aiidalab-qe
 author = Carl Simon Adorf, Aliaksandr Yakutovich, Marnik Bercx, Jusong Yu
 author_email = aiidalab@materialscloud.org
+license = MIT
+license_file = LICENSE
 classifiers =
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent