README.md typos
README.md typos

Leyonce/iceteck,kamdjouduplex/incubator-taverna-mobile,apache/incubator-taverna-mobile,apache/incubator-taverna-mobile,sagar15795/incubator-taverna-mobile,sagar15795/incubator-taverna-mobile,larrytech7/incubator-taverna-mobile,ianwdunlop/incubator-taverna-mobile