Reformated to be a proper package

[rodrigob]

Here is my pull request to address issue #9.
I squashed all my mini-changes into a big commit (other repositories like to do that).

I tried a fresh install into a virtualenv and it seemed to work fine. So unless I messed-up with my git manipulations, this should solve the issue.

Note that setup.py will also install pydensecrf.util as required.

I created my own playground applications to use it. Maybe util_inference_example.py should be moved of the package, and have it call import pydensecrf.densecrf and import pydensecrf.utils; so as to show the proper use of the library.

[lucasb-eyer]

Thanks a lot, just tested and it seems to work for me too! Good call on squashing, I prefer that too.

Few minor comments:

• The history of SparseAssign.h is weird, if it's easy to fix and squash+force-push that, I'd be grateful; but nevermind if it's a hassle.
• *~ and .idea don't belong into a project's .gitignore but rather into your global .gitignore, so would you mind taking them out, squashing and force-pushing?
• I agree with your comment on util_inference_example.py. Could you do that? (and import pydensecrf.densecrf as dcrf so we set a nice example.) I don't mind whether you squash this one or keep this commit separate.

[lucasb-eyer]

Oh, and if you write something like "Fixes #9" into the commit message, github will automatically close that issue when merging this PR.

[rodrigob]

Just updated my branch with these changes. I had problems with github and squashed commits (I am not a git guru, more of a hg guy), so I ended having "repeated commits".
I hope you can fix the commits history on your side.

[rodrigob]

Just noticed a minor change lost in my git fights. Pushed back as one extra commit.

[lucasb-eyer]

Merged manually with clean history, See c0550af, 19119d3, and 1463feb. If you want to take credit, I recommend you associate the e-mail address that you committed with (@mpi...) with your github account!

[lucasb-eyer]

Also, closing manually since it looks like github doesn't auto-detect manual merges.

[lucasb-eyer]

Thanks a lot for sharing this with us!