update known issues

gh-pages/docs/Known-Issues.md

@@ -21,7 +21,11 @@ Here is a list of known issues that will updated on a regular basis to captures
 
 ### CRC ###
 
-* ION implementation currently default will apply CRC to Primary Block but not the Payload Block. To apply CRC to the Payload Block, a compiler flag needs to be set when building ION. There are currently no mechanism to dynamically turn on/turn off CRC without recompiling ION.
+* ION implementation currently default will apply CRC16 to Primary Block but not the Payload Block. To apply CRC to the Payload Block, a compiler flag needs to be set when building ION. There are currently no mechanism to dynamically turn on/turn off CRC without recompiling ION.
+
+## Testing & Configuration ##
+
+* When developing and testing ION in a docker container with root permission while mounting to ION code residing in a user's directory on the host machine, file ownership may switch from user to `root`. This sometimes leads to build and test errors when one switches back to the host's development and testing environment. Therefore, we recommend that you execute the `make clean` and `git stash` command to remove all build and testing artifacts from ION 's source directory before exiting the container.
 
 ## Reporting Issues ##