Use http_archive for rules_apple (#118)

Author: jin

tutorial/WORKSPACE

@@ -1,11 +1,11 @@
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
 
-git_repository(
+http_archive(
     name = "build_bazel_rules_apple",
-    commit = "d16745aa68bed4f68a5d08d54516d3b397603814",
-    remote = "https://github.com/bazelbuild/rules_apple.git",
-    shallow_since = "1566925109 -0700",
+    strip_prefix = "rules_apple-b869b0d3868d78a1d4ffd866ccb304fb68aa12c3",
+    sha256 = "bdc8e66e70b8a75da23b79f1f8c6207356df07d041d96d2189add7ee0780cf4e",
+    url = "https://github.com/bazelbuild/rules_apple/archive/b869b0d3868d78a1d4ffd866ccb304fb68aa12c3.tar.gz",
 )
 
 load(