Martins Effector Upgraded for E3D V6

Just an updated version of martin19791121's effector design. Made some changes such as beveling the diagonal arm mounts and modifying it to fit an E3D v6. Fan Ducting has not been changed at all and is the same part as the original, only included here for convenience.

Supports will be needed for the hotend mount itself but the rest is capable of being printed without.