[BUGFIX] Wrong detection of viewhelper's name in widget uri.file

Fixed by using widgetViewHelperClassName from widgetContext
Merge pull request #7 from dogawaf/master

[BUGFIX] Wrong detection of viewhelper's name in widget uri.file
[BUGFIX] Use format.raw to not escape html characters in ViewHelper content
[FEATURE] Add composer.json
Merge pull request #10 from cedricziel/composerInit

[FEATURE] Add composer.json
Merge pull request #9 from benjaminrau/uriviewhelper

[BUGFIX] Use format.raw to not escape html characters in Uri ViewHelper content
[TASK] Happy new year
[TASK] Update build script