Merge branch 'new-file-repo-docs' into 'master'

Web editor documentation

Related to #1930

See merge request !1458

doc/workflow/README.md

@@ -10,3 +10,4 @@
 - [Migrating from SVN to GitLab](migrating_from_svn.md)
 - [Project importing from GitHub to GitLab](import_projects_from_github.md)
 - [Protected branches](protected_branches.md)
+- [Web Editor](web_editor.md)

doc/workflow/web_editor.md

+# GitLab Web Editor
+
+In GitLab you can create new files and edit existing files using our web editor.
+This is especially useful if you don't have access to a command line or you just want to do a quick fix.
+You can easily access the web editor, depending on the context.
+Let's start from newly created project.
+
+Click on `Add a file`
+to create the first file and open it in the web editor.
+
+![web editor 1](web_editor/empty_project.png)
+
+Fill in a file name, some content, a commit message and press the commit button.
+The file will be saved to the repository.
+
+![web editor 2](web_editor/new_file.png)
+
+You can edit any text file in a repository by pressing the edit button, when
+viewing the file.
+
+![web editor 3](web_editor/show_file.png)
+
+Editing a file is almost the same as creating a new file,
+with as addition the ability to preview your changes in a separate tab.
+
+![web editor 3](web_editor/edit_file.png)