Merge branch 'sh-add-rake-task-docs-and-bump-grape-path-helpers' into 'master'

Bump grape-path-helpers to 1.0.2 to get updated Rake task naming

See merge request gitlab-org/gitlab-ce!19474

Gemfile.lock

@@ -359,7 +359,7 @@ GEM
     grape-entity (0.7.1)
       activesupport (>= 4.0)
       multi_json (>= 1.3.2)
-    grape-path-helpers (1.0.1)
+    grape-path-helpers (1.0.2)
       activesupport (~> 4)
       grape (~> 1.0)
       rake (~> 12)

doc/development/rake_tasks.md

@@ -176,3 +176,20 @@ git push -u origin update-project-templates
 ```
 
 Now create a merge request and merge that to master.
+
+## Generate route lists
+
+To see the full list of API routes, you can run:
+
+```shell
+bundle exec rake grape:path_helpers
+```
+
+For the Rails controllers, run:
+
+```shell
+bundle exec rake routes
+```
+
+Since these take some time to create, it's often helpful to save the output to
+a file for quick reference.