Revert editor whitespace as it is indent-sensitive

Author: jasonkliu

index.html

@@ -47,28 +47,28 @@ <h2>Featuring</h2>
       <div class="col-md-8">
         <div id="active-code">
           <button type="button" class="btn btn-primary btn-sm" id="run-code">Run</button>
-          <div id="editor">// This code is editable and runnable!
-            fn main() {
-                // A simple integer calculator:
-                // `+` or `-` means add or subtract by 1
-                // `*` or `/` means multiply or divide by 2
-
-                let program = "+ + * - /";
-                let mut accumulator = 0;
-
-                for token in program.chars() {
-                    match token {
-                        '+' => accumulator += 1,
-                        '-' => accumulator -= 1,
-                        '*' => accumulator *= 2,
-                        '/' => accumulator /= 2,
-                        _ => { /* ignore everything else */ }
-                    }
-                }
-
-                println!("The program \"{}\" calculates the value {}",
-                          program, accumulator);
-            }</div>
+<div id="editor">// This code is editable and runnable!
+fn main() {
+    // A simple integer calculator:
+    // `+` or `-` means add or subtract by 1
+    // `*` or `/` means multiply or divide by 2
+
+    let program = "+ + * - /";
+    let mut accumulator = 0;
+
+    for token in program.chars() {
+        match token {
+            '+' => accumulator += 1,
+            '-' => accumulator -= 1,
+            '*' => accumulator *= 2,
+            '/' => accumulator /= 2,
+            _ => { /* ignore everything else */ }
+        }
+    }
+
+    println!("The program \"{}\" calculates the value {}",
+              program, accumulator);
+}</div>
           <div id="result">
             <a id="playlink" onclick="goPlayground()" ><i class="icon-link-ext"></i></a>
           </div>