follow header conventions again

This allows tools such as the built-in lisp-mnt.el to extract metadata
in the the library commentary.
Merge pull request #14 from tarsius/master

follow header conventions again
Fix issue #15 - problems with org-sync due in org 8.x
Merge branch 'master' of github.com:christopherjwhite/org-toodledo
Added sim test support for folders
Fixed issue #21; Added support for archiving deleted tasks (issue #17)
Fixed issue #22, skip empty tasks; Added comments about http-post-simple
Updated README
Support for archiving completed tasks, with simulated tests
Fix issue #24 - pay attention to org-default-priority
Fix for Issue #26 - sync all tasks on init if org-toodledo-sync-new-completed-tasks is t
Fix for Issue #27 - fix support for priorty -1 as E
Fixed issue #28 - drop extra space in dates when no repeat
Fix issue #31 - cleaned up compiler warnings
Fix issue #29 - support org-toodledo-post-sync-hook
Merge remote-tracking branch 'refs/remotes/christopherjwhite/master'

Merge upstream changes
Added revision history reflecting these changes to org-toodledo.el
Added new customization variable 'org-toodledo-preserve-drawers'