Updated FAQs (markdown)

FAQs.md

@@ -8,6 +8,7 @@ This has been written to address some frequently encountered issues among users
 * [How do I integrate RaspAP with Pi-hole?](#pihole)
 * [Can I configure RaspAP to work with a captive portal?](#captive)
 * [Why can't I access wireless mode 'N' (802.11n)?](#wireless-mode)
+* [How do I prepare the SD card to connect to WiFi in headless mode?](#headless-mode)
 
 ### <a name="custom"></a>My custom rc.local/networking configuration/wpa configuration is gone!
 Currently, RaspAP generates a few of its own files so that it starts with a known configuration. Your custom configurations haven't been lost however, they've been moved to the backups directory in `/etc/raspap/backups`.
@@ -143,4 +144,21 @@ RaspAP:
   Transmit Rate:	73
 ```
 
-If using TKIP for encryption with WPA, you will be restricted to 54 Mb/s. This is because the IEEE 802.11n draft prohibits using high throughput with WEP or TKIP ciphers.
+If using TKIP for encryption with WPA, you will be restricted to 54 Mb/s. This is because the IEEE 802.11n draft prohibits using high throughput with WEP or TKIP ciphers.
+
+### <a name="headless-mode"></a>How do I prepare the SD card to connect to WiFi in headless mode?
+Since [May 2016](https://www.raspberrypi.org/blog/another-update-raspbian/), Raspbian has been able to copy wifi details from `/boot/wpa_supplicant.conf` into `/etc/wpa_supplicant/wpa_supplicant.conf` to automatically configure wireless network access. 
+
+An example `wpa_supplicant.conf` file is shown below. Replace the fields with your settings:
+
+```
+ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
+update_config=1
+country=your_ISO-3166_two-letter_country_code
+
+network={
+    ssid="my_SSID"
+    psk="my_PSK"
+    key_mgmt=WPA-PSK
+}
+```