Fix #9: Add a bit more detail in the documentation
Fix #9: Add a bit more detail in the documentation

- How to install
- Prerequisites (platform, SSH config)
- Link to the Gerrit page
- Link to the example script and license files

Change-Id: I0c24609e1ea89be55a68ebf4a1569c26f23e5a66

benjiii/pygerrit,dpursehouse/pygerrit,dpursehouse/pygerrit2,morucci/pygerrit,gferon/pygerrit2,markon/pygerrit2,sonyxperiadev/pygerrit