Update composer config

Change-Id: Ia071c2ee56c3a50ff272575144411c57e733b44e
Update composer config

Change-Id: I16c55fa1d1a849d4e8b4343787f2d67aa5aa99e9
Modify README

Change-Id: I0fd6123c0368b455d6d13192ee6669d2a4b5c5c4