docs: add asciidoc docs for use with refinedsites

docs/pages/how-to-install.adoc

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+= How to install
+
+Installing Refined Storage is the same as for any other Forge mod.
+
+== Setting up Forge
+
+You'll need a working Forge instance to use Refined Storage.
+You can use launchers like MultiMC or even the vanilla launcher to do this.
+
+Instructions for setting up a Forge instance are plenty online and are out of scope for this wiki.
+
+== Downloading the mod
+
+Download a Refined Storage `.jar` file for your Minecraft version from official sources:
+
+- link:https://www.curseforge.com/minecraft/mc-mods/refined-storage[CurseForge]
+- link:https://modrinth.com/mod/refined-storage[Modrinth]
+- link:https://github.com/refinedmods/refinedstorage/releases[GitHub]
+
+== Installing the mod
+
+Once you have the `.jar` file, place it in the `mods/` directory of your Forge instance.
+You may have to start up your instance at least once so Forge can autogenerate the `mods/` directory.
+
+== CurseForge/Twitch launcher
+
+When you're using a launcher like the CurseForge/Twitch launcher, you can install Refined Storage in an instance with one click without having to copy over `.jar` files.
+
+== Configuring the mod
+
+Changing the configuration isn't needed in most cases.
+If you need to do this, you can:
+
+- Change server-specific configuration in `saves/<your-world-name>/serverconfig/refinedstorage-server.toml`
+- Change client-specific configuration in `config/refinedstorage-client.toml`
+
+Note that server-specific configuration also applies to single player worlds.
+That is because when you're playing single player, Minecraft uses an internal server.
+
+[#_optional_dependencies]
+== Optional dependencies
+
+Refined Storage can work perfectly by itself without any additional mods, but it's helpful to install a few other mods alongside it.
+
+- **link:https://minecraft.curseforge.com/projects/jei[JEI (Just Enough Items)]:** This mod will help you view the recipes of the various items and blocks in the mod.
+- **A mod that can generate Forge Energy (also known as FE or RF):** A Refined Storage network requires energy to run.
+If you do not want to generate energy, you can disable energy usage in the Refined Storage server-side config (see section above "Configuring the mod").
+Change `useEnergy` under `[controller]` to `false`.
+- **link:https://www.curseforge.com/minecraft/mc-mods/crafting-tweaks[Crafting Tweaks]**
+- **link:https://www.curseforge.com/minecraft/mc-mods/curios[Curios]**
+- **link:https://www.curseforge.com/minecraft/mc-mods/inventory-sorter[Inventory Sorter]**
+
+Until Minecraft 1.14, xref:opencomputers-api.adoc[Refined Storage had integration with OpenComputers].
+