merged branch snc/composer-description (PR #323)
merged branch snc/composer-description (PR #323)

Commits
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1f0db79 Added description to composer.json

Discussion
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Added description to composer.json

This PR "fixes" the composer.json validation.

Before:
`$ php composer.phar validate
./composer.json is valid for simple usage with composer but has
strict errors that make it unable to be published as a package:
description : is missing and it is required`

After:
`$ php composer.phar validate
./composer.json is valid`

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