DM: update readme

Author: deanm1278

README.md

@@ -1,48 +1,15 @@
 # Arduino Core for SAMD21 and SAMD51 CPU
 
-## Known Issues:
-* gcc optimizations must be off for sketches to work consistently. We are working to track this down.
-* AREF must be tied to 3.3V for dac to work. This is a bug in the SAMD51 silicon.
-* USB host mode doesn't work yet
-* I2S doesn't work yet
-
 This repository contains the source code and configuration files of the Arduino Core
 for Atmel's SAMD21 and SAMD51 processor (used on the Arduino/Genuino Zero, MKR1000 and MKRZero boards).
 
 In particular, this adds support for the Adafruit SAMD Boards such as the Feather M0
 
-## ATSAMD51 Installation on Arduino IDE
-
-The ATSAMD51 is a significantly new chip, so this is a detailed process for now! For the SAMD21, please install via the board manager (no extra steps required)
-
-1. Install Arduino IDE 1.8.5 or greater
-2. Install/update the Adafruit SAMD board support package if you have installed it
-3. Now we need to update CMSIS! Download https://github.com/adafruit/ArduinoModule-CMSIS-Atmel/archive/master.zip and unzip
-4. Find your Arduino CMSIS, in Mac its "~/Library/Arduino15/packages/arduino/tools/CMSIS-Atmel/1.1.0/CMSIS" version # may vary, you'll need "Go to folder..." feature in the Finder to get to " ~/Library/Arduino15" as it is hidden. In Windows it is "C:\Users\yourusername\AppData\Local\Arduino15\packages\arduino\tools\CMSIS-Atmel\1.1.0\CMSIS" Inside is a folder named Device
-
-For Linux: the Arduino stuff is located in ~/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.1.0/CMSIS
-
-5. Inside the downloaded CMSIS zip, go into the CMSIS-Atmel/CMSIS folder, you should see a folder named Device. *DRAG THE DEVICE FOLDER ONLY* from the zip to your arduino Library folder so that Device is merged with Device. It will replace a bunch of files.
-
-For Linux, it may be better to just delete the original Device Folder then copy over the new one - the drag/drop worked ok on MACOS, but not so well on my Linux box.  
-
-6. You will also need to replace bossac. For Windows or Mac: Go here https://github.com/adafruit/BOSSA/releases and download either windows exe or mac app of latest bossac. unzip.  Go to Step 12.
-
-For Linux users it is best to build a copy of bossac locally - 
-clone the Adafruit Repostitory to somewhere on your local machine.
-```
-git clone https://github.com/adafruit/BOSSA.git
-change to the arduino branch
-git checkout arduino
-```
-Follow the instructions to build bossac in README.md or at https://github.com/adafruit/BOSSA/tree/arduino.
-
-7. Replace the binary at ".../Library/Arduino15/packages/arduino/tools/bossac/1.7.0/bossac" or "...\AppData\Local\Arduino15\packages\arduino\tools\bossac\1.7.0\bossac"
-8. On Windows 7 you will also need to install the updated serial driver, download https://github.com/adafruit/Adafruit_Windows_Drivers/archive/master.zip to get all the drivers, and point the Device Manager to the unzipped folder. It isn't signed, so just approve the installation manually.
-13. That's it!
-
 ## Bugs or Issues
 
+* AREF must be tied to 3.3V for dac to work. This is a bug in the SAMD51 silicon.
+* USB host mode doesn't work yet
+
 If you find a bug you can submit an issue here on github:
 
 https://github.com/adafruit/ArduinoCore-samd