fix(install): prebuilt instruction (closes #474) (#476)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

README.md

@@ -19,6 +19,9 @@ https://github.com/user-attachments/assets/86140bfd-08b4-483d-a887-1b701d9e37dd
 
 ## Installation
 
+For building binary if you wish to build from source, then `cargo` is required. Otherwise `curl` and `jq` will be used to get prebuilt binary from GitHub.
+
+For prebuilt binary, one must set the following `GITHUB_TOKEN` in given shell (instruction for creating PAT is [here](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens))
 
 <details open>
 
@@ -32,10 +35,9 @@ https://github.com/user-attachments/assets/86140bfd-08b4-483d-a887-1b701d9e37dd
   opts = {
     -- add any opts here
   },
-  -- if you want to build from source, then pass source=true (requires cargo).
-  -- Also note that building from source will block startuptime since
-  -- we are compiling bindings in Rust.
-  build = ":AvanteBuild",
+  -- if you want to download pre-built binary, then pass source=false. Make sure to follow instruction above.
+  -- Also note that downloading prebuilt binary is a lot faster comparing to compiling from source.
+  build = ":AvanteBuild source=false",
   dependencies = {
     "stevearc/dressing.nvim",
     "nvim-lua/plenary.nvim",
@@ -117,7 +119,7 @@ add({
     'MunifTanjim/nui.nvim',
     'echasnovski/mini.icons'
   },
-  hooks = { post_checkout = function() vim.cmd('AvanteBuild') end }
+  hooks = { post_checkout = function() vim.cmd('AvanteBuild source=false') end }
 })
 --- optional
 add({ source = 'zbirenbaum/copilot.lua' })