Update documentation and other files (#23)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: 47erbot

AUTHORS.md

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+[comment]: <> (Don't edit this file!)
+[comment]: <> (It is automatically updated after every release of https://github.com/47degrees/.github)
+[comment]: <> (If you want to suggest a change, please open a PR or issue in that repository)
+
+# Authors
+
+## Maintainers
+
+The maintainers of the project are:
+
+- [![angoglez](https://avatars0.githubusercontent.com/u/10107285?v=4&s=20) **Ana Gómez González (angoglez)**](https://github.com/angoglez)
+- [![anamariamv](https://avatars0.githubusercontent.com/u/2183589?v=4&s=20) **Ana Mª Marquez (anamariamv)**](https://github.com/anamariamv)
+- [![kiroco12](https://avatars1.githubusercontent.com/u/48894338?v=4&s=20) **Enrique Nieto (kiroco12)**](https://github.com/kiroco12)
+- [![jdesiloniz](https://avatars2.githubusercontent.com/u/2835739?v=4&s=20) **Javier de Silóniz Sandino (jdesiloniz)**](https://github.com/jdesiloniz)
+- [![juanpedromoreno](https://avatars2.githubusercontent.com/u/4879373?v=4&s=20) **Juan Pedro Moreno (juanpedromoreno)**](https://github.com/juanpedromoreno)
+
+## Contributors
+
+These are the people that have contributed to the _exercises-template_ project:
+
+- [![juanpedromoreno](https://avatars2.githubusercontent.com/u/4879373?v=4&s=20) **juanpedromoreno**](https://github.com/juanpedromoreno)
+- [![jdesiloniz](https://avatars2.githubusercontent.com/u/2835739?v=4&s=20) **jdesiloniz**](https://github.com/jdesiloniz)
+- [![kiroco12](https://avatars1.githubusercontent.com/u/48894338?v=4&s=20) **kiroco12**](https://github.com/kiroco12)
+- [![anamariamv](https://avatars0.githubusercontent.com/u/2183589?v=4&s=20) **anamariamv**](https://github.com/anamariamv)
+- [![angoglez](https://avatars0.githubusercontent.com/u/10107285?v=4&s=20) **angoglez**](https://github.com/angoglez)

CODE_OF_CONDUCT.md

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+[comment]: <> (Don't edit this file!)
+[comment]: <> (It is automatically updated after every release of https://github.com/47degrees/.github)
+[comment]: <> (If you want to suggest a change, please open a PR or issue in that repository)
+
+# Code of Conduct
+
+We are committed to providing a friendly, safe and welcoming
+environment for all, regardless of level of experience, gender, gender
+identity and expression, sexual orientation, disability, personal
+appearance, body size, race, ethnicity, age, religion, nationality, or
+other such characteristics.
+
+Everyone is expected to follow the
+[Scala Code of Conduct](https://typelevel.org/code-of-conduct.html) when
+discussing the project on the available communication channels. If you
+are being harassed, please contact us immediately so that we can
+support you.
+
+## Moderation
+
+For any questions, concerns, or moderation requests please contact a
+[member of the project](AUTHORS.md#maintainers).

CONTRIBUTING.md

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+[comment]: <> (Don't edit this file!)
+[comment]: <> (It is automatically updated after every release of https://github.com/47degrees/.github)
+[comment]: <> (If you want to suggest a change, please open a PR or issue in that repository)
+
+# Contributing
+
+Discussion around _exercises-template_ happens in the [GitHub issues](https://github.com/scala-exercises/exercises-template/issues) and [pull requests](https://github.com/scala-exercises/exercises-template/pulls).
+
+Feel free to open an issue if you notice a bug, have an idea for a feature, or have a question about
+the code. Pull requests are also welcome.
+
+People are expected to follow the [Code of Conduct](CODE_OF_CONDUCT.md) when discussing _exercises-template_ on the Github page or other venues.
+
+If you are being harassed, please contact one of [us](AUTHORS.md#maintainers) immediately so that we can support you. In case you cannot get in touch with us please write an email to [47 Degrees](mailto:[email protected]).
+
+## How can I help?
+
+_exercises-template_ follows a standard [fork and pull](https://help.github.com/articles/using-pull-requests/) model for contributions via GitHub pull requests.
+
+The process is simple:
+
+ 1. Find something you want to work on
+ 2. Let us know you are working on it via GitHub issues/pull requests
+ 3. Implement your contribution
+ 4. Write tests
+ 5. Update the documentation
+ 6. Submit pull request
+
+You will be automatically included in the [AUTHORS.md](AUTHORS.md#contributors) file as contributor in the next release.
+
+If you encounter any confusion or frustration during the contribution process, please create a GitHub issue and we'll do our best to improve the process.

NOTICE.md

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+[comment]: <> (Don't edit this file!)
+[comment]: <> (It is automatically updated after every release of https://github.com/47degrees/.github)
+[comment]: <> (If you want to suggest a change, please open a PR or issue in that repository)
+
+exercises-template
+
+Copyright (c) 2016-2020 47 Degrees. All rights reserved.
+
+Licensed under Apache-2.0. See [LICENSE](LICENSE.md) for terms.

src/main/scala/templatelib/MyLibrary.scala

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 /*
- * Copyright 2019 47 Degrees, LLC. <http://www.47deg.com>
+ * Copyright 2016-2020 47 Degrees <https://47deg.com>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/main/scala/templatelib/SectionA.scala

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 /*
- * Copyright 2019 47 Degrees, LLC. <http://www.47deg.com>
+ * Copyright 2016-2020 47 Degrees <https://47deg.com>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

src/test/scala/templatelib/MyLibrarySpec.scala

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 /*
- * Copyright 2019 47 Degrees, LLC. <http://www.47deg.com>
+ * Copyright 2016-2020 47 Degrees <https://47deg.com>
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.