Use logging module for verbosity control
Remove unnecessary verbosity check
Fix saving migrated records and update tests

[Resolves #57]
Merge pull request #61 from sloria/logging

Use logging module for verbosity control
Merge branch 'develop' into migration

Conflicts:
	modularodm/storedobject.py
	tests/test_migration.py
More correct examples
On branch migration
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

	modified:   modularodm/storedobject.py

Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	modified:   tests/test_migration.py
Added tests for making field required