Expose all tasks, and pull_schemas to other apps
bump to .13, for after matt's PR
Merge pull request #32 from heroku/expose-tasks

Expose tasks

Two things:

I didn't realize that rake pull_schemas was not exposed to gems that depend on vault-tools, so that's kinda huge. This task should now be available when you require vault-tools/tasks
I went ahead and required the other tasks defined in this gem in the above require, which should make it a little cleaner/quicker/simpler to pull tasks in.