Allow mobile OS-check via Twig filter
Fixes #50: Query string gets lost on "device_view=XXX"
Updates the phpunit version to ~4.1, which should fix Travis builds
breaking on PHP versions > 5.3.
Merge pull request #54 from netmikey/fix_travis_build

Fix Travis build
Merge pull request #52 from escapestudios/master

Allow mobile OS-check via Twig filter
Merge pull request #53 from netmikey/fix_deviceview_query

Fixes #50: Query string gets lost on "device_view=XXX"
add new info to readme