Refactor Managers

 * Moves managers to SoftLayer.managers
 * Moves manager tests to SoftLayer.tests.managers
 * Adds missing manager imports so that all managers are exposed as SoftLayer.ManagerClass
 * Adds missing hardware manager to the docs
 * Adds Firewall Manager Test
 * Renames capital manager modules to lowercase
 * Moves manager exceptions to SoftLayer.exceptions
 * Adds a couple missing module doc blocks
First Attempt at Message Queue Module
Corrects reference to list-accounts
Merge pull request #102 from sudorandom/master

Raises TypeError when you call an API method with invalid keyword arguments
Refactor Managers

 * Moves managers to SoftLayer.managers
 * Moves manager tests to SoftLayer.tests.managers
 * Adds missing manager imports so that all managers are exposed as SoftLayer.ManagerClass
 * Adds missing hardware manager to the docs
 * Adds Firewall Manager Test
 * Renames capital manager modules to lowercase
 * Moves manager exceptions to SoftLayer.exceptions
 * Adds a couple missing module doc blocks
Merge branch 'move_managers' of github.com:sudorandom/softlayer-api-python-client into move_managers
Refactor Managers

 * Moves managers to SoftLayer.managers
 * Moves manager tests to SoftLayer.tests.managers
 * Adds missing manager imports so that all managers are exposed as SoftLayer.ManagerClass
 * Adds missing hardware manager to the docs
 * Adds Firewall Manager Test
 * Renames capital manager modules to lowercase
 * Moves manager exceptions to SoftLayer.exceptions
 * Adds a couple missing module doc blocks
First Attempt at Message Queue Module
Corrects reference to list-accounts
Merge branch 'message-queue' of github.com:sudorandom/softlayer-api-python-client into message-queue
Merge pull request #100 from sudorandom/move_managers

Refactor Managers
Merge pull request #101 from sudorandom/message-queue

Message queue
Doc:  URL fixups
dns: fixed delete zone in CLI
List and filter DNS records

CLI: added optional zone name to the dns list command
CLI: Added optional filters to the dns list command
DNS: added get_records() call.
DNS: tests get_records
Merge pull request #104 from CrackerJackMack/dns_list

DNS list enhancements
Fixed sl dns list
Fixing iSCSI documentation
Merge pull request #105 from beittenc/master

Correcting iSCSI documentation