Change cat command to get.

Signed-off-by: Casey Dwyer <caseydwyer@gmail.com>
Use get_blob in btfu.

Signed-off-by: Casey Dwyer <caseydwyer@gmail.com>
Bug fix: is_root in put_file should be false by default.

Signed-off-by: Casey Dwyer <caseydwyer@gmail.com>
Add put command for no real good reason.

Signed-off-by: Casey Dwyer <caseydwyer@gmail.com>