Fixed maintenance mode

Undid changes for #43 as they require magento to have initialized which does not happen during maintenance mode.

Serialized data crashes - on nullvalues

1.0.10

unserializer, on empty values return false.

v1.0.9: Merge pull request #45 from webbhuset/feat/unserialize-error

Fixed error Error during unserialization when having serialized config values.

Fixs image transparency on png

v1.0.2

Merge pull request #37 from freestream/fix/give-back-my-transparency-…

v1.0.0

Updated readme