add A3 2017 page

Change-Id: Ie7f6c345ccb84a180d11f7115be3a41df5729d39
diff --git a/_samsung/samsunggalaxya32017.markdown b/_samsung/samsunggalaxya32017.markdown
new file mode 100644
index 0000000..a0a5a20
--- /dev/null
+++ b/_samsung/samsunggalaxya32017.markdown
@@ -0,0 +1,27 @@
+---
+layout: device
+title: "Samsung Galaxy A3 2017"
+codename: a3y17lte
+download folder: a3y17lte
+cpu: Exynos7870
+supportstatus: Current
+maintainer: McFy
+device tree:
+"https://github.com/TeamWin/android_device_samsung_a3y17lte"
+oem: Samsung
+ddof: "/dev/block/platform/13540000.dwmmc0/by-name/RECOVERY"
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include appinstall.html %}
+
+{% include download.html %}
+
+{% include twrpinstall.html %}
+
+{% include odininstall.html %}
+
+{% include ddinstall.html %}