Add setup and build setps to README.markdown
Add setup and build setps to README.markdown

twstrike/xmpp-client,isislovecruft/xocolatl,kenkes/xmpp-client,agl/xmpp-client,iseeareddoor/xmpp-client,thommfullery/birdcannon,Yawning/ricochet-client,paulperegud/xmpp-client,isislovecruft/xmpp-client