chore: update docs config

Author: heywhy

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Atanda Rasheed
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

lib/elasticlunr.ex

@@ -5,7 +5,7 @@ defmodule Elasticlunr do
 
   alias Elasticlunr.{Index, IndexManager, Pipeline}
 
-  @spec index(atom() | binary()) :: Index.t() | :not_running
+  @spec index(atom() | binary(), keyword()) :: Index.t() | :not_running
   def index(name, opts \\ []) do
     with opts <- with_default_pipeline([name: name] ++ opts),
          index <- Index.new(opts),

mix.exs

@@ -14,7 +14,15 @@ defmodule Elasticlunr.MixProject do
       package: package(),
       aliases: aliases(),
       deps: deps(),
-      source_url: @source_url
+      source_url: @source_url,
+
+      # Docs
+      name: "Elasticlunr",
+      homepage_url: "https://hexdocs.pm/elasticlunr",
+      docs: [
+        main: "readme",
+        extras: ["README.md", "LICENSE"]
+      ]
     ]
   end