Tabs -> spaces in README.html.

README.html

@@ -19,31 +19,31 @@ body, th, td, input {
     font: 14px 'Source Sans Pro', Arial, sans-serifsans-serif;
 }
 .section {
-	background: #fff;
-	position: relative;
-	padding: 2em 2.4em;
-	margin: 3em auto 4em auto;
+    background: #fff;
+    position: relative;
+    padding: 2em 2.4em;
+    margin: 3em auto 4em auto;
     width: 80%;
     -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
     -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
     box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
 }
 .section:before, .section:after {
-	content: "";
-	position: absolute;
-	z-index: -2;
+    content: "";
+    position: absolute;
+    z-index: -2;
 }
 .section {
     -moz-border-radius: 4px;
     border-radius: 4px;
 }
 .section:before, .section:after {
-	bottom: 15px;
-	left: 10px;
-	width: 50%;
-	height: 20%;
-	max-width: 300px;
-	max-height: 100px;
+    bottom: 15px;
+    left: 10px;
+    width: 50%;
+    height: 20%;
+    max-width: 300px;
+    max-height: 100px;
     -webkit-box-shadow: 0 15px 10px rgba(0, 0, 0, 0.5);
     -moz-box-shadow: 0 15px 10px rgba(0, 0, 0, 0.5);
     box-shadow: 0 15px 10px rgba(0, 0, 0, 0.5);