add note for user to create ARM_GCC_ROOT variable in vscode setup
add note for user to create ARM_GCC_ROOT variable in vscode setup

madcowswe/ODrive,madcowswe/ODrive,madcowswe/ODriveFirmware,madcowswe/ODrive,madcowswe/ODrive,madcowswe/ODriveFirmware,madcowswe/ODriveFirmware,madcowswe/ODrive,madcowswe/ODriveFirmware