(maint) README updates to support install_ca_certs

README.md

@@ -2,6 +2,8 @@
 
 This gem is simply an abstraction for the various ways that we install puppet from the `spec/spec_helper_acceptance.rb` files across the modules.
 
+### `run_puppet_install_helper`
+
 The way to use this is to declare either `run_puppet_install_helper()` or `run_puppet_install_helper_on(hosts)` and set environment variables `PUPPET_VERSION` and/or `PUPPET_INSTALL_TYPE` in the following combinations to have puppet installed on the desired hosts:
 
 - `PUPPET_INSTALL_TYPE` is unset: it will look at the default node's type (ie, `default.is_pe?` and choose either foss or pe methods below.
@@ -13,6 +15,15 @@ The way to use this is to declare either `run_puppet_install_helper()` or `run_p
 
 The best way is explicitly set `PUPPET_INSTALL_TYPE` and `PUPPET_VERSION` to what you want. It'll probably do what you expect.
 
+### `install_ca_certs`
+
+Install Certificate Authority Certs on Windows and OSX for Geotrust, User Trust Network, and Equifax
+On Windows it currently is limited to hosts that use cygwin
+
+### `install_ca_certs_on`
+
+Install certs on a given host(s)
+
 ### Support
 
 No support is supplied or implied. Use at your own risk.