[readme] added link to susi.readme.io documentation;
[readme] added link to susi.readme.io documentation;

geisslercom/susi,webvariants/susi,geisslercom/susi,webvariants/susi,webvariants/susi,geisslercom/susi,geisslercom/susi,webvariants/susi,geisslercom/susi