Add a jam button (#2791)

Add jam button

Author: gusruben

Diff for: src/legacy/homepage.scss

@@ -698,3 +698,7 @@ nav {
 		grid-template-columns: 1fr;
 	}
 }
+
+#learn-btn {
+	margin-top: 0.5rem;
+}

Diff for: src/pages/index.astro

@@ -75,6 +75,12 @@ if (session && session.session.full) {
 							Play a game »
 						</button>
 					</a>
+
+					<a href='https://jams.hackclub.com/batch/sprig'>
+						<button class='btn active' id="learn-btn">
+							Learn how to make a game &raquo;
+						</button>
+					</a>
 				</div>
 			</div>
 		</section>