Add guide outline. Remove unused file.

docs/outline.md

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+# This is an evolving outline for the guide.
+
+**Introduction**: Overarching info about Rocket and the guide.
+
+  * **Foreword** - A bit about the guide.
+  * **Audience** - Who this guide is intended for.
+  * **Philosophy** - The ideas behind Rocket.
+  * **Outline** - An outline of the guide.
+
+**Quickstart**: Super quick info about running the examples.
+
+**Getting Started**: Overview of how to use Rocket with Rust.
+
+  * **Rust Nightly** - How to get Rust nightly, and why Rocket needs it.
+  * **Cargo Project** - How to use Rocket in a Cargo project.
+    * **Project Organization** - Overview of the three crates: lib, codegen, contrib.
+  * **Running** - Running a Rocket application and what to expect.
+  * **Configuration** - How to configure Rocket.
+    * **Rocket.toml** - Syntax and semantics of the Rocket.toml file.
+    * **Environments** - Explanation and how to set.
+    * **Logging** - How logging in Rocket works.
+
+**From Request to Response**: Overview of Rocket's request/response handling.
+
+  * **Routing** - How routing works in Rocket.
+  * **Request** - How request (pre)processing works.
+  * **Response** - How response (post) processing works.
+
+**Routing**: How to route in Rocket.
+
+  * **Overview** - An overview of routes in Rocket.
+  * **Route Attribute** - Description, explanation, and how to use the attribute.
+    * **Path** - Explanation of the path argument.
+      * **Static Parameters** - Static segments in route path.
+      * **Dynamic Parameters** - Dynamic segments in route path.
+      * **Segment Parameters** - Segment.. segments in route path.
+      * **Query Params** - Segment.. segments in route path.
+    * **Format** - Explanation of the format attribute.
+    * **Form** - Exaplanation of the form attribute.
+  * **Handlers** - How to declare handlers in Rocket.
+    * **Path Arguments** - Parameters declared in the route path.
+    * **FromRequest Arguments** - Parameters derived from the request.
+    * **Form Arguments** - Parameters derived from a form.
+  * **Mounting** - Mounting routes at a given path.
+  * **Collision and Ranking** - Explains route collisions and ranking.
+  * **Route Outcome** - Different types of outcomes and their meaning.
+  * **Catching Errors** - Explanation of catchers and their use.
+  * **Manual Routing** - How to route without using code generation.
+
+**Request**
+
+  * **Overview** - An overview of the section.
+  * **Request Traits** - Explanation of traits used by request handlers.
+    * **FromParam** - Explanation of the FromParam trait.
+    * **FromSegments** - Explanation of the FromSegments trait.
+    * **FromRequest** - Explanation of the FromRequest trait.
+    * **FromForm** - Explanation of the FromForm trait.
+      * **FromFormValue** - Explanation of the FromFormValue trait.
+  * **Forms** - How Rocket makes forms easy.
+    * **Custom Validation** - How to add custom validation to forms.
+    * **Query Params** - How to use/validate query params.
+  * **Cookies** - Using cookies.
+  * **Session** - Using sessions with a private key.
+  * **JSON** - Taking in JSON.
+
+**Response**
+
+  * **Overview** - An overview of the section.
+  * **Responder Trait** - Explanation of the Responder trait and its instability.
+  * **Simple Responses** - The simple response types Rocket provides.
+    * Empty, Redirect, StatusResponse, Data
+  * **JSON** - Explanation and use of the JSON response.
+  * **Templating** - Templates in contrib.
+  * **Flash** - Explanation and use of the Flash response.
+  * **Stream** - Explanation and use of the Stream response.