From 6f7db1cdc5b252df962e45f2dff5ff448fb24967 Mon Sep 17 00:00:00 2001
From: Joshua Seigler <github@joshua.seigler.net>
Date: Sat, 2 Jul 2016 10:11:01 -0400
Subject: [PATCH] fix png rendering, needs XML tag

---
 views/chart.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/views/chart.php b/views/chart.php
index 6d92a7b..5ffdeff 100644
--- a/views/chart.php
+++ b/views/chart.php
@@ -128,7 +128,8 @@ function renderChart(
     }
 
     $poloniexChart = new NeatCharts\LineChart($chartData, $themes[$theme]);
-    $result = $poloniexChart->render();
+    $result = '<?xml version="1.0" standalone="no"?>' . PHP_EOL;
+    $result .= $poloniexChart->render();
 
     if ($format == 'png') {
       $im = new Imagick();