Merge branch 'jramsay-detailed-proofreader-process-docs' into 'master'

Add more detail to the proofreader process

See merge request gitlab-org/gitlab-ce!17279

doc/development/i18n/proofreader.md

@@ -37,12 +37,31 @@ are very appreciative of the work done by translators and proofreaders!
 > sure that you have a history of contributing translations to the GitLab
 > project.
 
-1. Once your translations have been accepted,
-   [open a merge request](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/new)
-   to request Proofreader permissions and add yourself to the list above.
+1. Contribute translations to GitLab. See instructions for
+   [translating GitLab](translation.md).
+
+    Translating GitLab is a community effort that requires team work and
+    attention to detail. Proofreaders play an important role helping new
+    contributors, and ensuring the consistency and quality of translations.
+    Your conduct and contributions as a translator should reflect this before
+    requesting to be a proofreader.
+
+1. Request proofreader permissions by opening a merge request to add yourself
+   to the list of proofreaders.
+
+    Open the [proofreader.md source file][proofreader-src] and click **Edit**.
+
+    Add your language in alphabetical order, and add yourself to the list
+    including:
+
+    - name
+    - link to your GitLab profile
+    - link to your CrowdIn profile
 
     In the merge request description, please include links to any projects you
     have previously translated.
 
 1. Your request to become a proofreader will be considered on the merits of
    your previous translations.
+
+[proofreader-src]: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/i18n/proofreader.md