fixing unknown prop react console error caused by textCentered prop in Home.js
fixing unknown prop react console error caused by textCentered prop in Home.js

Signed-off-by: Jackie Wijaya <a1bd68b596538eefe75c18d0f33235ef95568d46@webmocha.com>

grommet/grommet-docs,grommet/grommet-docs,karatechops/grommet-docs,karatechops/grommet-docs