Add Terraform/Remote State documentation to provider/resource section.

Issue hashicorp#2074

website/source/assets/stylesheets/_docs.scss

@@ -23,6 +23,7 @@ body.layout-aws,
 body.layout-docs,
 body.layout-inner,
 body.layout-downloads,
+body.layout-terraform,
 body.layout-intro{
 	background: $light-black image-url('sidebar-wire.png') left 62px no-repeat;
 
@@ -287,4 +288,3 @@ body.layout-intro{
 		}
 	}
 }
-

website/source/docs/providers/terraform/index.html.markdown

@@ -0,0 +1,38 @@
+---
+layout: "terraform"
+page_title: "Provider: Terraform"
+sidebar_current: "docs-terraform-index"
+description: |-
+  The Terraform provider is used to access meta data from shared infrastructure.
+---
+
+# Terraform Provider
+
+The terraform provider exposes resources to access state meta data
+for Terraform outputs from shared infrastructure.
+
+The terraform provider is what we call a _logical provider_. This has no
+impact on how it behaves, but conceptually it is important to understand.
+The terraform provider doesn't manage any _physical_ resources; it isn't
+creating servers, writing files, etc. It is used to access the outputs
+of other Terraform states to be used as inputs for resources.
+Examples will explain this best.
+
+Use the navigation to the left to read about the available resources.
+
+## Example Usage
+
+```
+# Shared infrastructure state stored in Atlas
+resource "terraform_remote_state" "vpc" {
+    backend = "atlas"
+    config {
+        path = "hashicorp/vpc-prod"
+    }
+}
+
+resource "aws_instance" "foo" {
+    # ...
+    subnet_id = "${terraform_remote_state.vpc.output.subnet_id}"
+}
+```

website/source/docs/providers/terraform/r/remote_state.html.md

@@ -0,0 +1,38 @@
+---
+layout: "terraform"
+page_title: "Terraform: terraform_remote_state"
+sidebar_current: "docs-terraform-resource-remote-state"
+description: |-
+  Accesses state meta data from a remote backend.
+---
+
+# remote\_state
+
+Retrieves state meta data from a remote backend
+
+## Example Usage
+
+```
+resource "terraform_remote_state" "vpc" {
+    backend = "atlas"
+    config {
+        path = "hashicorp/vpc-prod"
+    }
+}
+
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `backend` - (Required) The remote backend to use.
+* `config` - (Optional) The configuration of the remote backend.
+
+## Attributes Reference
+
+The following attributes are exported:
+
+* `backend` - See Argument Reference above.
+* `config` - See Argument Reference above.
+* `output` - The values of the configured `outputs` for the root module referenced by the remote state.

website/source/layouts/docs.erb

@@ -172,6 +172,10 @@
 					<li<%= sidebar_current("docs-providers-template") %>>
 					<a href="/docs/providers/template/index.html">Template</a>
 					</li>
+
+					<li<%= sidebar_current("docs-providers-terraform") %>>
+					<a href="/docs/providers/terraform/index.html">Terraform</a>
+					</li>
 				</ul>
 				</li>
 

website/source/layouts/terraform.erb

@@ -0,0 +1,26 @@
+<% wrap_layout :inner do %>
+	<% content_for :sidebar do %>
+		<div class="docs-sidebar hidden-print affix-top" role="complementary">
+			<ul class="nav docs-sidenav">
+				<li<%= sidebar_current("docs-home") %>>
+					<a href="/docs/providers/index.html">&laquo; Documentation Home</a>
+				</li>
+
+				<li<%= sidebar_current("docs-terraform-index") %>>
+					<a href="/docs/providers/terraform/index.html">Terraform Provider</a>
+				</li>
+
+				<li<%= sidebar_current(/^docs-terraform-resource/) %>>
+					<a href="#">Resources</a>
+					<ul class="nav nav-visible">
+						<li<%= sidebar_current("docs-terraform-resource-remote-state") %>>
+							<a href="/docs/providers/terraform/r/remote_state.html">terraform_remote_state</a>
+						</li>
+					</ul>
+				</li>
+			</ul>
+		</div>
+	<% end %>
+
+	<%= yield %>
+<% end %>