Build examples and deploy to gh-pages

Rejigger Travis slightly to take advantage of build stages to build the
`gh-pages` branch amongst a set of builders, and then when they're all
done we synchronize and deploy the site. For now use S3 as a backing
store for data between jobs.

guide/src/examples/2d-canvas.md

@@ -1,7 +1,8 @@
 # 2D Canvas
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/canvas/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/canvas
 
 Drawing a smiley face with the 2D canvas API. This is a port of part of [this

guide/src/examples/add.md

@@ -1,7 +1,8 @@
 # Small wasm files
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/add/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/add
 
 One of `wasm-bindgen`'s core goals is a pay-only-for-what-you-use philosophy, so

guide/src/examples/char.md

@@ -1,7 +1,8 @@
 # Working with the `char` type
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/char/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/char
 
 The `#[wasm_bindgen]` macro will convert the rust `char` type to a single

guide/src/examples/closures.md

@@ -1,7 +1,8 @@
 # web-sys: Closures
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/closures/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/closures
 
 One of the features of `#[wasm_bindgen]` is that you can pass closures defined

guide/src/examples/console-log.md

@@ -1,7 +1,8 @@
 # `console.log`
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/console_log/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/console_log
 
 This example shows off how to use `console.log` in a variety of ways, all the

guide/src/examples/dom.md

@@ -1,7 +1,8 @@
 # web-sys: DOM hello world
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/dom/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/dom
 
 Using `web-sys` we're able to interact with all the standard web platform

guide/src/examples/fetch.md

@@ -1,7 +1,8 @@
 # The `fetch` API
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/fetch/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/fetch
 
 This example uses the `fetch` API to make an HTTP request to the GitHub API and

guide/src/examples/hello-world.md

@@ -1,7 +1,8 @@
 # Hello, World!
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/hello_world/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/hello_world
 
 This is the "Hello, world!" example of `#[wasm_bindgen]` showing how to set up

guide/src/examples/import-js.md

@@ -1,7 +1,8 @@
 # Importing non-browser JS
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/import_js/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/import_js
 
 The `#[wasm_bindgen]` attribute can be used on `extern { .. }` blocks to import

guide/src/examples/julia.md

@@ -1,7 +1,8 @@
 # Julia Set
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/julia_set/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/julia_set
 
 While not showing off a lot of `web_sys` API surface area, this example shows a

guide/src/examples/paint.md

@@ -1,7 +1,8 @@
 # Paint Example
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/paint/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/paint
 
 A simple painting program.

guide/src/examples/performance.md

@@ -1,7 +1,8 @@
 # web-sys: `performance.now`
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/performance/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/performance
 
 Want to profile some Rust code in the browser? No problem! You can use the

guide/src/examples/wasm-in-wasm.md

@@ -1,7 +1,8 @@
 # js-sys: WebAssembly in WebAssembly
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/wasm-in-wasm/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/wasm-in-wasm
 
 Using the `js-sys` crate we can get pretty meta and instantiate `WebAssembly`

guide/src/examples/web-audio.md

@@ -1,7 +1,8 @@
 # WebAudio
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/webaudio/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/webaudio
 
 This example creates an [FM

guide/src/examples/webgl.md

@@ -1,7 +1,8 @@
 # WebGL Example
 
-[View full source code][code]
+[View full source code][code] or [view the compiled example online][online]
 
+[online]: https://rustwasm.github.io/wasm-bindgen/exbuild/webgl/
 [code]: https://github.com/rustwasm/wasm-bindgen/tree/master/examples/webgl
 
 This example draws a triangle to the screen using the WebGL API.