[BUGFIX] Correct some typos, fix code and docblocks
[FEATURE] Fluid ViewHelper to embed oEmbed resource

Can be used like this::

 namespace Ttree\Oembed\ViewHelpers;
 {o:embed(uri: 'https://www.youtube.com/watch?v=x36gsF-2Tgc')}
Merge pull request #2 from kdambekalns/viewhelper

[TASK] Fluid VH + typos and docblocks fixes