Update README.md file

1. Update the links of boots, hegel
2. Add osie
3. Add Packet and Equinix reference

README.md

@@ -2,13 +2,17 @@
 
 [![Build Status](https://cloud.drone.io/api/badges/tinkerbell/tink/status.svg)](https://cloud.drone.io/tinkerbell/tink)
 
-Tinkerbell is a bare metal provisioning and workflow engine.
-It is comprised of following three major components:
-1. A DHCP server ([boots](https://github.com/packethost/boots))
-2. A workflow engine (tinkerbell, this repository)
-3. A metadata service ([hegel](https://github.com/packethost/hegel)).
+Tinkerbell is a bare metal provisioning and workflow engine.   
+It was open-sourced by Packet, an Equinix company.
 
-The workflow engine is comprised of a server and a CLI, which communicate over gRPC. The CLI is used to create a workflow along with its building blocks, templates and targeted hardware.
+It is comprised of following four major components:
+
+ 1. A DHCP server ([boots](https://github.com/tinkerbell/boots))
+ 2. A workflow engine (tink, this repository)
+ 3. A metadata service ([hegel](https://github.com/tinkerbell/hegel))
+ 4. An in-memory installation environment([osie](https://github.com/tinkerbell/osie))
+
+ The workflow engine is comprised of a server and a CLI, which communicate over gRPC. The CLI is used to create a workflow along with its building blocks, templates and targeted hardware.
 
 # Packet Workflow