[rackspace|storage] fixing large upload example and documentation
Merge branch 'master' of github.com:fog/fog into example_fix
[Rackspace|Storage] updating large file upload based on @burns suggestions
[rackspace|storage] tweaking upload large file example to use X-Object-Manifest header in anticipation of PR #1855
[rackspace|storage] fixing typo in large file upload documentation; updated large file upload to work with ruby 1.8.7
Merge branch 'master' of github.com:fog/fog into example_fix
Merge pull request #1852 from rackspace/example_fix

[rackspace|storage] fixing large upload example and documentation