chore(docs): update WORKSPACE setup for skylib (#926)

Author: chenrui333

README.md

@@ -29,9 +29,19 @@ This project defines core build rules for [Scala](https://www.scala-lang.org/) t
 2. Add the following to your `WORKSPACE` file and update the `githash` if needed:
 
 ```python
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+# bazel-skylib 0.8.0 released 2019.03.20 (https://github.com/bazelbuild/bazel-skylib/releases/tag/0.8.0)
+skylib_version = "0.8.0"
+http_archive(
+    name = "bazel_skylib",
+    type = "tar.gz",
+    url = "https://github.com/bazelbuild/bazel-skylib/releases/download/{}/bazel-skylib.{}.tar.gz".format (skylib_version, skylib_version),
+    sha256 = "2ef429f5d7ce7111263289644d233707dba35e39696377ebab8b0bc701f7818e",
+)
+
 rules_scala_version="69d3c5b5d9b51537231746e93b4383384c9ebcf4" # update this as needed
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 http_archive(
     name = "io_bazel_rules_scala",
     strip_prefix = "rules_scala-%s" % rules_scala_version,
@@ -54,15 +64,6 @@ http_archive(
     strip_prefix = "protobuf-%s" % protobuf_version,
     sha256 = protobuf_version_sha256,
 )
-
-# bazel-skylib 0.8.0 released 2019.03.20 (https://github.com/bazelbuild/bazel-skylib/releases/tag/0.8.0)
-skylib_version = "0.8.0"
-http_archive(
-    name = "bazel_skylib",
-    type = "tar.gz",
-    url = "https://github.com/bazelbuild/bazel-skylib/releases/download/{}/bazel-skylib.{}.tar.gz".format (skylib_version, skylib_version),
-    sha256 = "2ef429f5d7ce7111263289644d233707dba35e39696377ebab8b0bc701f7818e",
-)
 ```
 
 This will load the `rules_scala` repository at the commit sha