Unification of Java examples
add requirements to pyrax getting started page
Update cloud servers sample code for node.js (server.setWait)

- Fixes #482
Merge pull request #489 from rackerlabs/gh-482

Update cloud servers sample code for node.js (server.setWait)
Merge pull request #476 from danabauer/dev

add requirements to pyrax getting started page
Merge pull request #470 from rackerlabs/not-supported

This Pull Request is not currently supported by your SDK.
:+1:
Adding marketing and global tracking
Merge pull request #492 from rdodev/retargeting-tags

Adding marketing and global tracking
Merge pull request #400 from jdaggett/java-unification

Unification of Java examples
Consistency touchups in Autoscale.

This section does need a fair amount more content work. There are a *ton* of `{groupId}` things that
can almost certainly be replaced with some form of `groupObject.id()`, but I didn't know the syntax for
them so I left them as-is.
Consistency pass for Cloud Block Storage.
Oops, missed an erroneous space
Cloud Databases touchup.