Add the request!/1 function

Author: GuillaumeMilan

lib/httpoison/base.ex

@@ -419,6 +419,22 @@ defmodule HTTPoison.Base do
         })
       end
 
+      @doc """
+      Issues an HTTP request an `HTTPoison.Request` struct.
+      exception in case of failure.
+
+      `request!/1` works exactly like `request/1` but it returns just the
+      response in case of a successful request, raising an exception in case the
+      request fails.
+      """
+      @spec request!(Request.t()) :: {:ok, Response.t() | AsyncResponse.t() | MaybeRedirect.t()}
+      def request!(%Request{} = request) do
+        case request(request) do
+          {:ok, response} -> response
+          {:error, %Error{reason: reason}} -> raise Error, reason: reason
+        end
+      end
+
       @doc """
       Issues an HTTP request with the given method to the given url, raising an
       exception in case of failure.