Request clearer instal instructions in README.me

I've read the entire README.md and the best I can gather is the install for this is to clone the repo and use the Mix.install based installation https://github.com/elixir-lsp/elixir-ls?tab=readme-ov-file#building-and-running . If that's really the desired way to install it, I'm assuming that I should also checkout the latest tagged semver version before doing that? I'm just making a bunch of assumptions, and a clear installation section would be helpful.

For context, I use OpenCode CLI and there appears to be a bug in their LSP support for Elixir. https://github.com/anomalyco/opencode/issues/12596 . Until that gets fixed I was going to setup the LSP and connect it as an MCP manually.

If the intent is to clone the repo and run the mix install, I could take a stab at a PR to improve the docs myself if that would be helpful. If I'm misunderstanding what I should do, please let me know.