Merge branch 'stable-3.0' into stable-3.1

* stable-3.0:
  Documentation: Add missing plugin in-tree testing
  Documentation: Add missing footer that links to plugin index page
  Add an empty tools/BUILD file explicitly for Bazel

Change-Id: I697963d65a0440fb45553c9d74ef62766e79b622

src/main/resources/Documentation/build.md

diff --git a/src/main/resources/Documentation/build.md b/src/main/resources/Documentation/build.md
index 40a9cc4..49709ef 100644
--- a/src/main/resources/Documentation/build.md
+++ b/src/main/resources/Documentation/build.md
@@ -19,6 +19,13 @@
   bazel-bin/plugins/@PLUGIN@/@PLUGIN@.jar
 ```
 
+To execute the tests run either one of:
+
+```
+  bazel test --test_tag_filters=@PLUGIN@ //...
+  bazel test plugins/@PLUGIN@:@PLUGIN@_tests
+```
+
 This project can be imported into the Eclipse IDE.
 Add the plugin name to the `CUSTOM_PLUGINS` set in
 Gerrit core in `tools/bzl/plugins.bzl`, and execute:
@@ -26,3 +33,7 @@
 ```
   ./tools/eclipse/project.py
 ```
+
+[Back to @PLUGIN@ documentation index][index]
+
+[index]: index.html
\ No newline at end of file

tools/BUILD

diff --git a/tools/BUILD b/tools/BUILD
new file mode 100644
index 0000000..cc10083
--- /dev/null
+++ b/tools/BUILD
@@ -0,0 +1 @@
+# Empty file - bazel treat directories with BUILD file as a package