Update README.md (#931)

- Adds missing providers to the documentation with links.
- Mentions that your own server install needs to be an Ubuntu 16.04 LTS distro
- Emphasize that the p12 certificate password will only be available once

README.md

@@ -14,7 +14,7 @@ Algo VPN is a set of Ansible scripts that simplify the setup of a personal IPSEC
 * Blocks ads with a local DNS resolver (optional)
 * Sets up limited SSH users for tunneling traffic (optional)
 * Based on current versions of Ubuntu and strongSwan
-* Installs to DigitalOcean, Amazon EC2, Microsoft Azure, Google Compute Engine, or your own server
+* Installs to DigitalOcean, Amazon Lightsail, Amazon EC2, Microsoft Azure, Google Compute Engine, Scaleway, OpenStack or your own Ubuntu 16.04 LTS server
 
 ## Anti-features
 
@@ -29,7 +29,7 @@ Algo VPN is a set of Ansible scripts that simplify the setup of a personal IPSEC
 
 The easiest way to get an Algo server running is to let it set up a _new_ virtual machine in the cloud for you.
 
-1. **Setup an account on a cloud hosting provider.** Algo supports [DigitalOcean](https://m.do.co/c/4d7f4ff9cfe4) (most user friendly), [Amazon EC2](https://aws.amazon.com/), [Google Compute Engine](https://cloud.google.com/compute/), and [Microsoft Azure](https://azure.microsoft.com/).
+1. **Setup an account on a cloud hosting provider.** Algo supports [DigitalOcean](https://m.do.co/c/4d7f4ff9cfe4) (most user friendly), [Amazon Lightsail](https://aws.amazon.com/lightsail/), [Amazon EC2](https://aws.amazon.com/), [Microsoft Azure](https://azure.microsoft.com/), [Google Compute Engine](https://cloud.google.com/compute/), [Scaleway](https://www.scaleway.com/) and [OpenStack](https://www.openstack.org/).
 
 2. **[Download Algo](https://github.com/trailofbits/algo/archive/master.zip).** Unzip it in a convenient location on your local machine.
 
@@ -67,7 +67,7 @@ The easiest way to get an Algo server running is to let it set up a _new_ virtua
 
 6. **Start the deployment.** Return to your terminal. In the Algo directory, run `./algo` and follow the instructions. There are several optional features available. None are required for a fully functional VPN server. These optional features are described in greater detail in [deploy-from-ansible.md](docs/deploy-from-ansible.md).
 
-That's it! You will get the message below when the server deployment process completes. You now have an Algo server on the internet. Take note of the p12 (user certificate) password in case you need it later.
+That's it! You will get the message below when the server deployment process completes. You now have an Algo server on the internet. Take note of the p12 (user certificate) password in case you need it later, **it will only be displayed this time**.
 
 You can now setup clients to connect it, e.g. your iPhone or laptop. Proceed to [Configure the VPN Clients](#configure-the-vpn-clients) below.