adding a json file to be ready to use packagist

[Grummfy]

Hello,
I think it could be intresting to use packagist to expose a litle bit more this library, so I add the basic of a composer file.

Afte merging, you add your package trought the website of packagist https://packagist.org

[vaab]

Ok, thanks ! Let me a few moment to check what is all this ;) ... (I'm not much involved in PHP development nowadays ;) ). I see that I need to get the licence right, and I just need to gather enough information to make a full test of this myself.
As I'm a little busy right now, this may take one or two days. Hope this is ok with you.

[Grummfy]

No problem.
You should retag this reprository right after to include in a tagged version the composer.json.

For information packagist is a central repository for library and others.

[vaab]

I did take a look to composer and made a full test. This made me realize that I hadn't any namespace and thus no class auto-loading feature. I added these features.

To test all this I moved the index.php (which was the example code) towards a sample-project directory with it's own composer.json. This allows to quickly build and test php-oe-json.

You can check the code/commits on the branch 'pr1' I made: https://github.com/0k/php-oe-json/tree/pr1

If this is okay with you, I'll push this branch to master and will declare this package in Packagist, and tag version 0.0.2.

[Grummfy]

Seems OK, just change the example in readme parth to include the namespace.

Thanks

[vaab]

It's all done. Thanks for your review and your interest ! Have fun !