Merge pull request #717 from marymclark/714-715-update-getting-started

Updated getting-started.rst to address issues 714 and 715

CONTRIBUTORS.md

@@ -63,3 +63,4 @@ Halle Jones|HJones@aliacy.com||
 [Sheena O'Connell](https://github.com/sheenarbw) | [@sheena@fosstodon.org](https://fosstodon.org/@sheena) | [blog](https://sheenaoc.com/) |
 [Quinn Redwoods](https://github.com/qredwoods) | | |
 [Jeff Epler](https://github.com/jepler) | | |
+[Mary Clark](https://github.com/marymclark) | [me@maryclark.net](me@maryclark.net) | | 

docs/getting-started.rst

@@ -63,21 +63,6 @@ All Systems::
 
    pip install ppb
 
-
-Additionally, on Linux only you must install the SDL library:
-
-Debian, Ubuntu::
-
-   sudo apt install libsdl2-2.0-0 libsdl2-mixer-2.0-0 libsdl2-image-2.0-0 libsdl2-gfx-1.0-0 libsdl2-ttf-2.0-0
-
-Fedora, CentOS, RHEL::
-
-    sudo dnf install SDL2 SDL2_ttf SDL2_image SDL2_gfx SDL2_mixer libmodplug
-
-Arch, Manjaro::
- 
-    sudo pacman -S sdl2 sdl2_ttf sdl2_image sdl2_gfx sdl2_mixer
-
 You should see a few libraries get put together in your terminal, and when
 you have a prompt again, we're ready to go!
 
@@ -184,8 +169,8 @@ This new ``Player`` moves a certain distance based on time, and a direction
 vector and its own speed. Right now, our direction is not anything (it's the
 zero-vector), but we'll change that in a moment. For now, go ahead and run the
 program a few times, changing the parameters to the ``direction`` ``Vector`` and
-the speed and see what happens. You can also modify ``position`` to see where
-you like your ship.
+the speed and see what happens. You can also modify ``position`` to change the 
+``Player`` starting position.
 
 Now that you're comfortable with the base mechanics of our new class, revert
 your changes to ``position``, ``speed``, and ``direction``. Then we can wire up