Add section that points to Ansible installation (#896)
Add section that points to Ansible installation (#896)

* Add Ansible installation instructions

* Change order and title of Ansible installation

* Capitalize istio

* Improve prerequisites

* Update version handling

* Fix wording of istio.dest

* Remove sentence concerning setting path for manually

This was done since it was confusing

* Fix sorting order

* Add missing punctuation

* Add missing colon

linsun/istio.github.io,jasminejaksic/istio.github.io,jasminejaksic/istio.github.io,istio/istio.io,istio/istio.io,geeknoid/istio.github.io,ZackButcher/istio.github.io,ZackButcher/istio.github.io,istio/istio.io,ZackButcher/istio.github.io,geeknoid/istio.github.io,geeknoid/istio.github.io,ZackButcher/istio.github.io,jasminejaksic/istio.github.io,geeknoid/istio.github.io,linsun/istio.github.io,istio/istio.io,jasminejaksic/istio.github.io,linsun/istio.github.io,istio/istio.io,linsun/istio.github.io,geeknoid/istio.github.io,istio/istio.io,linsun/istio.github.io,istio/istio.io