readme: Improve README (#2570)
readme: Improve README (#2570)

- Add space between stop and next sentence
- Add missing full stops
DaanHoogland/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,jcshen007/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack