updated API in readme
updated API in readme

masato/meshblu,jaambee/meshblu,Qbitus/meshblu,ChemTics/meshblu,masato/meshblu,osokay/IotServerCore,osokay/IotServerCore,osokay/IotServerCore,Qbitus/meshblu,atyenoria/meshblu,masato/meshblu,dommert/meshblu,atyenoria/meshblu,masato/meshblu-dev,dommert/meshblu,jaambee/meshblu,masato/meshblu-dev,atyenoria/meshblu,Qbitus/meshblu,jaambee/meshblu,dommert/meshblu,ChemTics/meshblu,masato/meshblu-dev,octoblu/meshblu,octoblu/meshblu,ChemTics/meshblu