chore(doc): Add note to INSTALL about SCL
chore(doc): Add note to INSTALL about SCL

Signed-off-by: Francisco Miguel Biete <f1d806242fc0bb697f053bcdfc66a36bc885611e@gmail.com>
<fbiete@gmail.com>

fmbiete/Z-Push-contrib,mta59066/Z-Push-contrib,RavenB/Z-Push-contrib,Freeaqingme/Z-Push-contrib