Updated README
Updated README

Included the information that the iOS Build script only works with
iOS SDK 9.2 or newer

wellavelino/cs-bdd,rafaelanastacioalves/sunomono,CSOscarTanner/cs-bdd,concretesolutions/sunomono,concretesolutions/sunomono,concretesolutions/sunomono,wellavelino/cs-bdd,rafaelanastacioalves/sunomono,CSOscarTanner/cs-bdd,CSOscarTanner/cs-bdd,rafaelanastacioalves/sunomono,wellavelino/cs-bdd