add translation

index.html

@@ -199,12 +199,12 @@ <h1>Speedtest-X</h1>
     <div id="progressBar"><div id="progress"></div></div>
 	<div class="testGroup">
 		<div class="testArea">
-			<div class="testName">Download</div>
+			<div class="testName">下载速度</div>
 			<div id="dlText" class="meterText"></div>
 			<div class="unit">Mbps</div>
 		</div>
 		<div class="testArea">
-			<div class="testName">Upload</div>
+			<div class="testName">上传速度</div>
 			<div id="ulText" class="meterText"></div>
 			<div class="unit">Mbps</div>
 		</div>
@@ -216,13 +216,13 @@ <h1>Speedtest-X</h1>
 			<div class="unit">ms</div>
 		</div>
 		<div class="testArea">
-			<div class="testName">Jitter</div>
+			<div class="testName">抖动</div>
 			<div id="jitText" class="meterText"></div>
 			<div class="unit">ms</div>
 		</div>
 	</div>
 	<div id="ipArea">
-		IP Address: <span id="ip"></span>
+		IP地址: <span id="ip"></span>
 	</div>
 </div>
 <p><a href="./results.html">查看测速记录</a></p>