create initial contributing.md for fast releases. (#1206)

* create initial contributing.md for fast releases.

* fix markdown syntax issue.

* fix the link to the main docs folder.

* one more time, fixing the link.

* add note about contributing.md location.

* Add any contributing.md files to the exclude list

We don’t want them on the live site.

* stashing to switch branches.

* update the link in the warning include.

* update with correct current release terms.

* Update for feedback.

Author: BillWagner

docfx.json

@@ -40,7 +40,7 @@
           "files": ["**/*.md"],
           "src": "docs",
           "dest": "articles",
-          "exclude": ["**/includes/**"] 
+          "exclude": ["**/includes/**", "***/contributing.md"] 
         },
         {
           "files": ["*.md"],

docs/current-1.1/contributing.md

@@ -0,0 +1,53 @@
+# Using the current-1.1 folder and sub-folders
+
+This folder is the top-level node that matches the [docs](../welcome.md)
+folder, but contains deltas for the .NET Core 1.1 release.
+
+The goal of this separate parallel folder structure is to provide a location
+for the 1.1 release related content that can be relatively easily merged into
+the main structure when provide version switching in the published site.
+
+The content under this node should be a smaller document set that represents
+the deltas from the Long Term Support (LTS) release and the latest
+current release. 
+
+## Structure
+
+There are two cases to adding new content for this release:
+
+* Changes to existing documents
+    - Copy the existing content into a parallel folder under this structure. Make your changes, and add the modified file to the TOC for the 1.1 preview release.
+* New documents
+    - Put the new document in the proper location, and add it to the TOC under the node for the 1.1 preview release. 
+
+All current release files should have the following added near the
+top of the topic:
+
+[!include[current release track](../includes/warning.md)]
+
+We've created a snippet to include with the following syntax:
+
+```markdown
+[!include[current release track](../includes/warning.md)]
+```
+
+### Link instructions
+
+In both cases, provide links from current release to the LTS page (or parent index.md)
+for navigational purposes.
+Consider providing links from the LTS page (or parent index.md) to the
+new current release content page.
+
+## Future Considerations
+
+Our end goal is to surface different releases as branches in the
+[docs repo](https://github.com/dotnet/docs). Until that publishing
+scenario is supported, we'll use different top-level folders for each
+current release. 
+
+When the time comes, we can merge each current release into the main
+[docs](../docs) folder, merge the TOC nodes, and publish as a separate doc
+set. We may need to merge modifications to both the LTS version of a file
+and the current release of a file, but we should be able to find those
+changes relatively easily.
+

docs/includes/warning.md

@@ -0,0 +1,4 @@
+> [!WARNING]
+> This topic represents *current release* software. This version will be supported
+> only until the following current lease. For the latest Long Term Release information,
+> see [the major release version documentation](/articles/core/index.md)