Add nx511j markdown

Change-Id: I720796888268f1cc368ea162466eacc35c075192
diff --git a/_nubia/nubianx511j.markdown b/_nubia/nubianx511j.markdown
new file mode 100644
index 0000000..b796d04
--- /dev/null
+++ b/_nubia/nubianx511j.markdown
@@ -0,0 +1,21 @@
+---
+layout: device
+title:  "Nubia ZTE Z9 mini"
+codename: nx511j
+downloadfolder: nx511j
+supportstatus: Current
+maintainer: TTTT555
+oem: Nubia
+devicetree: https://github.com/TeamWin/android_device_nubia_nx511j
+4pdathread: http://4pda.ru/forum/index.php?s=&showtopic=702119&view=findpost&p=69744779
+---
+
+{% include disclaimer.html %}
+
+{% include supportstatus.html %}
+
+{% include appinstall.html %}
+
+{% include download.html %}
+
+{% include twrpinstall.html %}