Object Storage Miscellaneous

Reviewing the Object Storage v1 code yesterday I noticed several things that need to be done to drive it torward completion.

- Minor fixes
 - [X] Remove 'get' prefix in methods
 - [X] Add doc.go files
- Testing
 - [X] Add `v1` directory to Acceptance Tests
 - [X] Break-up storage_test.go into multiple files
 - [X] Add Unit Tests
 - [X] Improve Acceptance Tests (right now they assume an empty object store)
- Additions
 - [X] Improve documentation
 - [X] Return more informative errors
 - [X] Implement new Pager (#203)
 - [X] Generic BuildQueryString and BuildHeaders utility functions for parameters (f90a43ccbb33afd89cd912a7a464b2ce7eca3bf1)
Let's make that a separate PR, if you don't mind. My instinct is that there will be enough exceptions there that the global helper wouldn't be as useful as it is for query parameters. I've love to be proved wrong, though :wink: