bundle autoloading moved to PSR4
minor #258 bundle autoloading moved to PSR4 (cordoval)

This PR was squashed before being merged into the 3.0-dev branch (closes #258).

Discussion
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bundle autoloading moved to PSR4

|Q            |A   |
|---          |--- |
|Bug Fix?     |yes |
|New Feature? |no  |
|BC Breaks?   |no  |
|Deprecations?|no  |
|Tests Pass?  |yes |
|Fixed Tickets|#250|
|License      |MIT |
|Doc PR       |    |

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Commits
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fad6075 bundle autoloading moved to PSR4