Delete unnecessary dependencies and add useful information in README (#…

…1819)

* Delete unnecessary dependencies and add useful information in README

* Rename .png files from curse to champions

README.md

@@ -42,17 +42,10 @@ Find our open source 3D models, concept art, music, lore and more in our [Curse
 
 ## Requirements
 
-Ensure you have the following dependencies installed:
-
-- **Rust:**
+- **Rust:** _for docs_
   - [Install Rust](https://www.rust-lang.org/tools/install)
-- **Elixir and Erlang:**
-  - [Install Elixir using ASDF](https://thinkingelixir.com/install-elixir-using-asdf/)
-  - Erlang/OTP 26
-  - Elixir 1.15.4
-- **Unity:**
-  - [Download Unity](https://unity.com/unity-hub)
-- **Docker**
+- **Unity Hub:**
+  - [Download Unity Hub](https://unity.com/unity-hub)
 
 ## Suggested Development Environment
 
@@ -76,8 +69,10 @@ Your code should now autocomplete.
 git clone https://github.com/lambdaclass/champions_of_mirra
 ```
 
-- In Unity Hub, click on the add project button and select the `champions_of_mirra/client` folder.
-- Choose the correct editor version.
+- Open Unity Hub, if this is your first launching the Hub, you can skip the unity editor installation.
+- Click on the add project button and select `champions_of_mirra/client` folder.
+- Install the Unity editor suggested version (not latest).
+  - You can then install optional tools (Android SDK, iOS Build Support, etc.). None of them are mandatory.
 - Download the following libraries and include them in the `Assets/ThirdParty` folder:
   - [Top Down Engine](https://assetstore.unity.com/packages/templates/systems/topdown-engine-89636) by [More Mountains](https://moremountains.com). You need to purchase the license to use it.
   - [SineVFX](https://assetstore.unity.com/packages/vfx/particles/spells/top-down-effects-191455). You need to purchase the license to use it.
@@ -87,13 +82,8 @@ git clone https://github.com/lambdaclass/champions_of_mirra
 
 ## Local Testing
 
-For local testing, use the [mirra backend](https://github.com/lambdaclass/mirra_backend). Ensure you have the required dependencies installed and run:
-
-```bash
-git clone https://github.com/lambdaclass/mirra_backend
-devenv up
-```
-
+For local testing, use the [mirra backend](https://github.com/lambdaclass/mirra_backend).
+Follow its README instructions to build and run the application.
 Remember to set ```localhost``` as the server in the client.
 
 ## Documentation
@@ -116,8 +106,8 @@ Open: [http://localhost:3000/](http://localhost:3000/ios_builds.html)
 Some key documentation pages:
 
 - [Message protocol](https://docs.curseofmirra.com/message_protocol.html)
-- [Android build](https://docs.curseofmirra.com/android_builds.html)
-- [IOs builds](https://docs.curseofmirra.com/ios_builds.html)
+- [Android builds](https://docs.curseofmirra.com/android_builds.html)
+- [iOS builds](https://docs.curseofmirra.com/ios_builds.html)
 
 ## Contact and Socials