Mongodoc

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- Bugfix: didn't really fix the bug, but now I did for real.

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- Bugfix: didn't show sub documents when the subdocs were longer than the parent doc.

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- Bugfix: bombed when the value of a field was {}

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- Forgot to update the changelog on 0.3
- Minor edit in README.rst.

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- Changed the console command
from doc-db to mongodoc
- Fixed easy_install problem
because of a missing HISTORY
file - OOPS!

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- Fixed a bug in counting similar docs
- When the user keeps saying no to the
'use this doc' prompt