Added jwt and cryptography libraries to README.md
Added jwt and cryptography libraries to README.md

Signed-off-by: Rudolf J Streif <ea7b312ba06c558b2c165670d6c670057f7928aa@gmail.com>

rstreif/rvi_backend,PDXostc/rvi_backend,klooer/rvi_backend,PDXostc/rvi_backend,bharmon/rvibackend,bharmon/rvibackend,lillialexis/rvi_backend,rstreif/rvi_backend,afan1/rvi_backend,lillialexis/rvi_backend,rstreif/rvi_backend,magnusfeuer/rvi_backend,magnusfeuer/rvi_backend,afan1/rvi_backend,dvthiriez/rvi_backend,bharmon/rvibackend,magnusfeuer/rvi_backend,dvthiriez/rvi_backend,magnusfeuer/rvi_backend,lillialexis/rvi_backend,klooer/rvi_backend,afan1/rvi_backend,rstreif/rvi_backend,dvthiriez/rvi_backend,klooer/rvi_backend,lillialexis/rvi_backend,klooer/rvi_backend,afan1/rvi_backend,bharmon/rvibackend,dvthiriez/rvi_backend,PDXostc/rvi_backend,PDXostc/rvi_backend