Provide initial documentation

[DamianReeves]

• [ ] ReadMe
• [ ] High level overview
• [ ] Provide example use-cases
• [ ] IR guide - walk through the structure of the IR
• [ ] SDK documentation

Notes:

• [ ] We should provide links to the various tools and bindings (Elm, Bosque, Dapr, Scala, Java, F#, etc)
• [ ] We should provide links to the various package repositories (i.e. npm, elm, maven, & nuget)
• [ ] Include some diagrams