added Windows setup instructions for SBCL

feel free to tell me if i did something incorrectly. hope this helps someone! i found this website to be a very welcoming resource! :D

Author: vipermark7

implementations/sbcl-setup.html

@@ -34,7 +34,10 @@ <h2 id="linedit">Linedit</h2>
     (require :linedit)
     (funcall (intern &quot;INSTALL-REPL&quot; :linedit) :wrap-current t))</code></pre>
 <h2 id="installing-on-windows">Installing on Windows</h2>
-<p>Dear Windows SBCL user, please tell us how it&#8217;s done!</p>
+<p> Install the Scoop package manager. To do this, open PowerShell and type: ' iex (new-object net.webclient).downloadstring('https://get.scoop.sh') ' (minus single quotes).
+Grant whatever permissions it needs. </p>
+<p> Type: scoop install curl (no special permissions needed!), and you're all set! Restart the shell and you can start working in SBCL! </p>
+
 <h2 id="further-installation-on-linuxosx">Further installation on Linux/OSX</h2>
 <p>Sometimes the SBCL you pick up from sbcl.org isn&#8217;t as feature-complete as you want, or perhaps you want to recompile it for your own reasons (i.e., the Hunchentoot web server requires threads).</p>
 <p>In order to do this, download the <em>source</em> SBCL package and issue this set of commands:</p>