Add README

Author: Isabel Garrido

README.md

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+# Kotlin Bootstrap (base / project skeleton)
+
+[![Software License][ico-license]][link-license]
+
+## Introduction
+
+This is a repository intended to serve as a starting point if you want to bootstrap a project in Kotlin.
+
+It could be useful if you want to start from scratch a kata or a little exercise or project. The idea is that you don't have to worry about the boilerplate
+* Latest stable kotlin version
+* Best practices applied:
+ * [`README.md`][link-readme]
+ * [`LICENSE`][link-license]
+ * [`build.gradle.kts`][link-build-gradle]
+ * [`.gitignore`][link-gitignore]
+* Some useful resources to start coding
+
+## How To Start
+
+You just need to manually clone [this repo](https://github.com/CodelyTV/kotlin-basic-skeleton)
+
+### Cloning the repository
+
+We recommend to follow the next step by step process in order to avoid adding the bootstrap project commits to your project Git history:
+
+1. [Use this repositoy template](https://github.com/CodelyTV/kotlin-basic-skeleton/generate)
+2. Clone your project
+3. Move to the project directory: `cd your-project-name`
+5. Build the project for the first time: `./gradlew build`
+6. Run all the checks: `./gradlew check`. This will do some checks that you can perform with isolated commands:
+ 1. [Klint](https://ktlint.github.io/) using [Spotless](https://github.com/diffplug/spotless): `./gradlew spotlessCheck`. If you want to fix style issues automatically: `./gradlew spotlessApply`.
+ 2. [Kotlin test](https://kotlinlang.org/api/latest/kotlin.test/): `./gradlew test`.
+7. Start coding!
+
+## Helpful resources
+
+### Kotlin
+
+* [Kotlin Coding Conventions](https://kotlinlang.org/docs/coding-conventions.html)
+* [Comparison between Kotlin and Java](https://kotlinlang.org/docs/comparison-to-java.html)
+
+### Kotlin test
+
+* [Test code using JUnit in JVM - tutorial](https://kotlinlang.org/docs/jvm-test-using-junit.html)
+* [JUnit5 assertions](https://junit.org/junit5/docs/5.0.1/api/org/junit/jupiter/api/Assertions.html)
+
+
+## About
+
+This hopefully helpful utility has been developed by [CodelyTV][link-author] and [contributors][link-contributors].
+
+We'll try to maintain this project as simple as possible, but Pull Requests are welcomed!
+
+## License
+
+The MIT License (MIT). Please see [License File][link-license] for more information.
+
+[ico-license]: https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square
+
+[link-license]: LICENSE
+[link-readme]: README.md
+[link-gitignore]: .gitignore
+[link-build-gradle]: build.gradle.kts
+[link-author]: https://github.com/CodelyTV