I Made 2 Small Scripts Flashable Files Around 100Kb Each.
No Need To Change To Add Files Anythings
Just
Reboot To Recovery
To Enable ART Flash This : Mega Devhost
Wipe Dalvik Cache

To Revert To Dalvik Flash This : Mega Devhost
Wipe Dalvik/Cache

First Of All ART Is Not Compatible With Xposed. Xposed Itself Change ART To Dalvik. So If You Want To Use ART Uninstall Xposed.