Added library info etc

Author: BenjaminDannegard

content/hardware/09.mega/shields/giga-display-shield/essentials.md

@@ -11,10 +11,16 @@
     A list of libraries that come bundled with the Mbed core.
 </EssentialElement>
 
-<EssentialElement link="" title="" type="library">
-    
+<EssentialElement link="https://github.com/arduino-libraries/ArduinoGraphics" title="Arduino Graphics" type="library">
+    A Library with graphical features to produce visuals on the display shield.
+</EssentialElement>
+
+<EssentialElement link="https://github.com/arduino-libraries/Arduino_BMI270_BMM150" title="Arduino_BMI270_BMM150.h" type="library">
+    A Library for using the IMU sensor on the shield.
 </EssentialElement>
 
+
+
 </EssentialsColumn>
 
 <EssentialsColumn title="Arduino Basics">

content/hardware/09.mega/shields/giga-display-shield/features.md

@@ -24,14 +24,13 @@ A reference to all technical features on this board, with pointers to additional
 </Feature>
 
 <Feature title="MP34DT06JTR Digital microphone" image="microphone">
-
-<FeatureLink title="" url=""/>
+The microphone on the shield is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface.
+<FeatureLink title="datasheet" url="https://eu.mouser.com/datasheet/2/389/mp34dt06j-1387393.pdf"/>
 </Feature>
 
 <Feature title="Bosch BMI270 6 Axis IMU" image="IMU">
-
-
-<FeatureLink title="" url=""/>
+The shield has an IMU that can provide precise acceleration, angular rate measurement and intelligent on-chip motion-triggered interrupt features.
+<FeatureLink title="datasheet" url="https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmi270-ds000.pdf"/>
 </Feature>
 
 <Feature title="High density connector for Portenta" image="">