message: Update building docs.
diff: @@ -14,16 +14,16 @@ We will use the `hello_world` example project from ggez for all these
  examples. To do the initial setup, assuming you have cargo installed:
  ```sh
  -cargo init --bin hello_world
  -cd hello_world
  +cargo init --bin 02_hello_world
  +cd 02_hello_world
  ```
  Now copy-paste the contents of
  -<https://raw.githubusercontent.com/ggez/ggez/master/examples/hello_world.rs>
  +<https://raw.githubusercontent.com/ggez/ggez/master/examples/02_hello_world.rs>
  into `hello_world/src/main.rs`, or just wget it:
  ```sh
  -wget https://raw.githubusercontent.com/ggez/ggez/master/examples/hello_world.rs
  +wget https://raw.githubusercontent.com/ggez/ggez/master/examples/02_hello_world.rs
  mv hello_world.rs src/main.rs
  ```
  @@ -108,16 +108,8 @@ Note that distributing your own libSDL2.so will still fail if the user has a sig
  # Mac
  -Install SDL2 with the [brew](https://brew.sh/) package manager like
  -so:
  -
  -TODO: Double-check this with 0.5
  -
  -```sh
  -brew install sdl2
  -```
  -
  -which should build and install SDL2, header files and any dependencies.
  +Should be able to just install Rust and run the game, same as the basic setup
  +instructions.
  ## Distributing
  