Create release script

Progress:

![screen shot 2013-08-28 at 1 38 39 pm](https://f.cloud.github.com/assets/359239/1039649/70a01e44-0f93-11e3-9fec-f61dcee2480e.png)

Done:

 - tab-completion for places where you need a project name
 - calling `Create-Release.ps1` to create the necessary package and installer
 - when you don't specify a project, use the current one

TODO:

 - [ ] merge the `Create-Release.ps1` script into mine
 - [ ] better diagnostics ("have you build the solution?" etc)
 - [ ] update docs for changes to Powershell methods

Open Questions:

Can you think of better names for the two methods above while using the approved `Get-Verb` syntax for Powershell methods - and indicating these are Shimmer-specific methods?

 - the first is to bootstrap a project so that it will output artefacts for Shimmer to consume
 - the second is to create the Shimmer release binaries and setup installer