Update README instructions (#472)

Author: keith

README.md

@@ -47,23 +47,12 @@ replacing the `urls` and `sha256` attributes with the values from the release
 you wish to depend on:
 
 ```python
-load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
-# rules_swift and apple_support no longer support releases. If you'd like to pin
-# down these dependencies to a specific commit, please add the following to the
-# top of your WORKSPACE, using the commit you'd like to pin for each of the
-# repositories.
-git_repository(
+http_archive(
     name = "build_bazel_rules_swift",
-    remote = "https://github.com/bazelbuild/rules_swift.git",
-    commit = "[SOME_HASH_VALUE]",
-)
-
-git_repository(
-    name = "build_bazel_apple_support",
-    remote = "https://github.com/bazelbuild/apple_support.git",
-    commit = "[SOME_HASH_VALUE]",
+    sha256 = "cea22c0616d797e494d7844a9b604520c87f53c81de49613a7e679ec5b821620",
+    url = "https://github.com/bazelbuild/rules_swift/releases/download/0.14.0/rules_swift.0.14.0.tar.gz",
 )
 
 load(