Add function to return current git version

Author: qgadrian

lib/git.ex

@@ -1,24 +1,12 @@
 defmodule GitHooks.Git do
   @moduledoc false
 
-  @doc false
-  @spec resolve_git_path() :: any
-  def resolve_git_path do
-    :git_hooks
-    |> Application.get_env(:git_path)
-    |> case do
-      nil ->
-        {path, 0} = System.cmd("git", ["rev-parse", "--git-path", "hooks"])
-        String.replace(path, "\n", "")
+  @spec git_version() :: Version.t()
+  def git_version() do
+    {full_git_version, 0} = System.cmd("git", ["--version"])
 
-      custom_path ->
-        custom_path
-    end
-  end
+    [version] = Regex.run(~r/\d\.\d+\.\d+/, full_git_version)
 
-  @spec git_hooks_path_for(path :: String.t()) :: String.t()
-  def git_hooks_path_for(path) do
-    __MODULE__.resolve_git_path()
-    |> Path.join("/#{path}")
+    Version.parse!(version)
   end
 end

lib/git/path.ex

@@ -27,13 +27,11 @@ defmodule GitHooks.Git.Path do
 
   # https://stackoverflow.com/questions/10848191/git-submodule-commit-hooks
   #
-  # Git 2.10+
-  # `git rev-parse --git-path hooks`
-  # Pre Git 2.10+
-  # `git rev-parse --git-dir /hooks`
+  # For git >= 2.10+ => `git rev-parse --git-path hooks`
+  # For git < 2.10+ => `git rev-parse --git-dir /hooks`
   #
-  # This will support as well changes on the default /hooks path
-  # git config core.hooksPath .githooks/
+  # This will support as well changes on the default /hooks path:
+  # `git config core.hooksPath .myCustomGithooks/`
 
   @spec resolve_git_hooks_path_based_on_git_version() :: String.t()
   defp resolve_git_hooks_path_based_on_git_version() do