readme and install fixes
minor fabfile fixes
remove custom report map from localsettings example
fabfile changes for worldbank
add dimagi.utils to HQ_APPPs so its management command is accessible
add gunicorn to DEFAULT_APPS
add pg host and port settings which can cause errors if left out
readme changes for worldbank
only copy localsettings if it doesn't exist
typo
Merge pull request #108 from dimagi/documentation

fabfile and readme changes for worldbank production deploy