Revert "Removed key parts of code for tutorial"

This reverts commit 1ab924f6.

index.html

@@ -6,7 +6,7 @@
   <div id="game" style="font-family: monospace; cursor: pointer;">
   </div>
   <div>
-      <button>Step</button>
+      <button onclick="javascript: { gameOfLife.stepGame(); render(); }">Step</button>
   </div>
 
 

render.js

@@ -2,6 +2,32 @@
 
 function render() {
 
-    // You need to write this
+    let gameDiv = document.getElementById("game")
+    gameDiv.innerHTML = ""
+
+    for (let y = 0; y < gameOfLife.getH(); y++) {
+        let row = document.createElement("div")
+        row.setAttribute("class", "gamerow")
+        gameDiv.appendChild(row)
+
+        for (let x = 0; x < gameOfLife.getW(); x++) {
+            let t = document.createElement("span")
+
+            if (gameOfLife.isAlive(x, y)) {
+                t.innerHTML = "#"
+            } else {
+                t.innerHTML = "."
+            }
+
+            let handler = function(evt) {
+                gameOfLife.toggleCell(x, y)
+                render()
+            }
+                
+            t.addEventListener("mousedown", handler)
+
+            row.appendChild(t)
+        }
+    }
 
 }
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