Added pins for Fan-1 And Fan-2 on Rambo to pins.h
Changed reference for FAN2 in the advanced config
Started to config setting for diffent possible fan setups. Not active yet.
Extruder Fan Setup set to "2" now allows manual control over Fan0 and Fan1 by using M106 P0 and M106 P1 respectively
Extruder Fan Setup set to "2"  Now will switch active extruder fan based on tool head changes( T0 and T1
Added code comments and Updated Readme with M106 Changes
Added support for dual fans with FAN_SOFT_PWM or FAST_PWM_FAN
If Extruder Fan Setup is set to 3, Fan1 will turn on based off Extruder temps
Added another extruder fan setup congig.
Fan1 speed can now be indpendent from Fan0.
Also active fan does not switch with tool head change.
Changed config back to FAST_PWM_FAN
Merge branch 'Dual_Fan_control'

Merging dual fan control into master. This will allow multiple options for controlling multiple fans with and without a dual extruder.