updated README

README.md

+MAF & MEF schemas
+=================
+
+This is the repository for developing XML schema for the reource types defined in oneM2M TS-0032
+
+\<MAFBase\>
+\<MEFBase\>
+\<mafClientReg\>
+\<mefClientReg\>
+\<symmKeyReg\>
+\<mefClientCmd\>
+
+SEC-commonTypes-v2_0_0.xsd defines data types common to all resource types
+
+Note: The required xsd files CDT-commonTypes-v_x_y_0 can be downloaded from 
+      https://git.onem2m.org/PRO/XSD.git
+
+