updated to 1.5.4
updated virtualbox compute-basics example
updated examples to use jclouds 1.6.0-alpha.1
update to jclouds 1.5.7
An example of Rackspace Cloud Files Temp URL.
Merge pull request #26 from rackspace/rax-cloud-files-temp-url

An example of Rackspace Cloud Files Temp URL.