Merge pull request #164 from siddacious/bd3491fs

adding bd3491fs driver

Author: evaherrada

.gitmodules

@@ -466,3 +466,6 @@
 [submodule "libraries/helpers/azure"]
 	path = libraries/helpers/azure
 	url = https://github.com/adafruit/Adafruit_CircuitPython_AzureIoT.git
+[submodule "libraries/drivers/bd3491fs"]
+	path = libraries/drivers/bd3491fs
+	url = https://github.com/adafruit/Adafruit_CircuitPython_BD3491FS.git

docs/drivers.rst

@@ -249,6 +249,7 @@ Miscellaneous
 
     74HC595 Shift Register <https://circuitpython.readthedocs.io/projects/74hc595/en/latest/>
     AMG88xx Grid-Eye IR Camera <https://circuitpython.readthedocs.io/projects/amg88xx/en/latest/>
+    BD3491FS Audio Processor  <https://circuitpython.readthedocs.io/projects/bd3491fs/en/latest/>
     CAP1188 8-Key Capacitive Touch <https://circuitpython.readthedocs.io/projects/cap1188/en/latest/>
     DRV2605 Haptic Motor Controller <https://circuitpython.readthedocs.io/projects/drv2605/en/latest/>
     Fingerprint Sensor <https://circuitpython.readthedocs.io/projects/fingerprint/en/latest/>