Added the first version of the installation doc (this will be maintained in source control, not as a wiki, going forward)
Added the first version of the installation doc (this will be maintained in source control, not as a wiki, going forward)

eHealthAfrica/formhub,ehealthafrica-ci/formhub,ehealthafrica-ci/formhub,eHealthAfrica/formhub,ehealthafrica-ci/formhub,eHealthAfrica/formhub,eHealthAfrica/formhub,ehealthafrica-ci/formhub