Proposal for a new Orbit 2.2.1 release ...

This pull request contains many small fixes to Orbit, documentation and samples such that it works with the latest versions of WSAPI (1.6) and other dependency modules that no longer use the Lua 5.1 package model.

Its goal is to allow installation of Orbit from Luarocks for users running Lua 5.1 with all samples running and clean, updated documentation. I have tested all* samples with 5.1.5 and wsapi-xavante. Will test fastcgi loader with nginx later but have no concerns at this time.

Prerequisites:
Cosmo patch [#6](https://github.com/mascarenhas/cosmo/pull/6)
WSAPI patch [#30](https://github.com/keplerproject/wsapi/pull/30)

* sproutcore is "loading"... no time yet to delve into what the javascript might or might not be doing...

Any feedback welcome!