samples: apds9960: move under sensors and update docs

Change-Id: I8e5735f15dbba5b9fead8f677104843a947b28ca
Signed-off-by: Anas Nashif <anas.nashif@intel.com>

samples/sensor/apds9960/README.rst

@@ -0,0 +1,50 @@
+RGB and Gesture Sensor
+######################
+
+Overview
+========
+
+This sample utilizes APDS-9960 Sensor and reads RGB values from the sensor
+then displays the color through the APA102C LED.
+
+
+.. note::
+   This sample does not use the Zephyr sensor APIs
+
+Wiring
+======
+
+The SparkFun RGB and Gesture Sensor was being used:
+
+- https://www.sparkfun.com/products/12787
+- https://www.adafruit.com/product/2343
+
+For APA102C, on the sensor subsystem (ARC) side of Arduino 101:
+
+1. GPIO_SS_2 is on AD0 (for APA102C data)
+2. GPIO_SS_3 is on AD1 (for APA102C clock)
+
+The GPIO driver is being used for bit-banging to control the APA102C LED.
+
+The APA102/C requires 5V data and clock signals, so logic level shifter
+(preferred) or pull-up resistors are needed.  Make sure the pins are 5V
+tolerant if using pull-up resistors.
+
+.. important::
+
+   The APA102C are very bright even at low settings.  Protect your eyes
+   and do not look directly into those LEDs.
+
+Building and Running
+====================
+
+This sample can be built for multiple boards, in this example we will build it
+for the Arduino 101 board:
+
+.. code-block:: console
+
+   $ cd samples/sensors/apds9960
+   $ make BOARD=arduino_101_sss
+   $ make BOARD=arduino_101_sss flash # with JTAG
+   .. or
+   $ dfu-util -a sensor_core -D outdir/arduino_101_sss/zephyr.bin # with DFU

samples/sensor/apds9960/src/main.c

@@ -14,31 +14,6 @@
  * limitations under the License.
  */
 
-/**
- * @file Sample app to utilize APDS-9960 Sensor on Arduino 101 (ARC).
- *
- * The SparkFun RGB and Gesture Sensor was being used:
- *   https://www.sparkfun.com/products/12787
- *
- * This sample app is to read RGB value from the APDS-9960 sensor
- * and to display the color through the APA102C LED.
- *
- * For APA102C, on ARC side of Arduino 101:
- * 1. GPIO_SS_2 is on AD0 (for APA102C data)
- * 2. GPIO_SS_3 is on AD1 (for APA102C clock)
- *
- * The gpio_dw driver is being used for bit-banging to control
- * the APA102C LED..
- *
- * The APA102/C requires 5V data and clock signals, so logic
- * level shifter (preferred) or pull-up resistors are needed.
- * Make sure the pins are 5V tolerant if using pull-up
- * resistors.
- *
- * WARNING: the APA102C are very bright even at low settings.
- * Protect your eyes and do not look directly into those LEDs.
- */
-
 #include <zephyr.h>
 #include <stdio.h>
 #include <device.h>