Comments for legibility, test DEBUG_LEVELING

.travis.yml

 ---
 language: c
-
+  #
 before_install:
   # Travis runs a detached head. We need to find the current branch
   - git checkout `git branch --contains HEAD | grep -v '*'`
   # Also tags for the root(s) of the minor version(s)
   - git fetch origin --tags
   - mkdir ~/bin
+  #
 install:
   # Install arduino 1.6.4
   - wget http://downloads-02.arduino.cc/arduino-1.6.4-linux64.tar.xz
   - mv LiquidCrystal_I2C/LiquidCrystal_I2C /usr/local/share/arduino/libraries/LiquidCrystal_I2C
   - git clone https://github.com/lincomatic/LiquidTWI2.git
   - mv LiquidTWI2 /usr/local/share/arduino/libraries/LiquidTWI2
+  #
 before_script:
   # arduino requires an X server even with command line
   # https://github.com/arduino/Arduino/issues/1981
   - Xvfb :1 -screen 0 1024x768x16 &> xvfb.log &
   # change back to home directory for compiling
   - cd $TRAVIS_BUILD_DIR
+  #
 script:
-  # build default config
-  - build_marlin
+  #
   # Backup Configuration.h, Configuration_adv.h, and pins_RAMPS_14.h
+  #
   - cp Marlin/Configuration.h Marlin/Configuration.h.backup
   - cp Marlin/Configuration_adv.h Marlin/Configuration_adv.h.backup
   - cp Marlin/pins_RAMPS_14.h Marlin/pins_RAMPS_14.h.backup
-  # add sensor for bed
+  #
+  # Build with the default configurations
+  #
+  - build_marlin
+  #
+  # Test heated bed temperature sensor
+  #
   - opt_set TEMP_SENSOR_BED 1
   - build_marlin
-  # change extruder numbers from 1 to 2
+  #
+  # Test 2 extruders on basic RAMPS 1.4
+  #
   - opt_set MOTHERBOARD BOARD_RAMPS_14_EEB
   - opt_set EXTRUDERS 2
   - opt_set TEMP_SENSOR_1 1
-  #- cat Marlin/Configuration.h
   - build_marlin
-  # change extruder numbers from 2 to 3, needs to be a board with 3 extruders defined in pins.h 
+  #
+  # Test 3 extruders on RUMBA (can use any board with >=3 extruders defined)
+  #
   - opt_set MOTHERBOARD BOARD_RUMBA
   - opt_set EXTRUDERS 3
   - opt_set TEMP_SENSOR_2 1
   - build_marlin
-  # enable PIDTEMPBED 
+  #
+  # Test PIDTEMPBED
+  #
   - restore_configs
   - opt_enable PIDTEMPBED
   - build_marlin
-  # enable AUTO_BED_LEVELING
+  #
+  # Test AUTO_BED_LEVELING & DEBUG_LEVELING_FEATURE
+  #
   - restore_configs
-  - opt_enable ENABLE_AUTO_BED_LEVELING
+  - opt_enable ENABLE_AUTO_BED_LEVELING DEBUG_LEVELING_FEATURE
   - build_marlin
-  # enable AUTO_BED_LEVELING with servos
-  - restore_configs
-  - opt_enable ENABLE_AUTO_BED_LEVELING NUM_SERVOS Z_ENDSTOP_SERVO_NR SERVO_ENDSTOP_ANGLES DEACTIVATE_SERVOS_AFTER_MOVE
+  #
+  # Test AUTO_BED_LEVELING & DEBUG_LEVELING_FEATURE with Servos
+  #
+  - opt_enable NUM_SERVOS Z_ENDSTOP_SERVO_NR SERVO_ENDSTOP_ANGLES DEACTIVATE_SERVOS_AFTER_MOVE
   - build_marlin
-  # enable EEPROM_SETTINGS & EEPROM_CHITCHAT
+  #
+  # Test EEPROM_SETTINGS & EEPROM_CHITCHAT
+  #
   - restore_configs
   - opt_enable EEPROM_SETTINGS EEPROM_CHITCHAT
   - build_marlin
+  #
   ### LCDS ###
+  #
+  #
   # ULTIMAKERCONTROLLER
+  #
   - restore_configs
   - opt_enable ULTIMAKERCONTROLLER
   - build_marlin
+  #
   # MAKRPANEL
-  # Needs to use melzi and sanguino hardware
+  # Needs to use Melzi and Sanguino hardware
+  #
   #- restore_configs
   #- opt_enable MAKRPANEL
   #- build_marlin
+  #
   # REPRAP_DISCOUNT_SMART_CONTROLLER
+  #
   - restore_configs
   - opt_enable REPRAP_DISCOUNT_SMART_CONTROLLER SDSUPPORT
   - build_marlin
+  #
   # G3D_PANEL
+  #
   - restore_configs
   - opt_enable G3D_PANEL SDSUPPORT
   - build_marlin
+  #
   # REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+  #
   - restore_configs
-  - opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+  - opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER SDSUPPORT
   - build_marlin
+  #
   # REPRAPWORLD_KEYPAD
+  #
   # Cant find configuration details to get it to compile
   #- restore_configs
   #- opt_enable ULTRA_LCD REPRAPWORLD_KEYPAD REPRAPWORLD_KEYPAD_MOVE_STEP
   #- build_marlin
+  #
   # RA_CONTROL_PANEL
+  #
   - restore_configs
   - opt_enable RA_CONTROL_PANEL
   - build_marlin
+  #
   ### I2C PANELS ###
+  #
   # LCD_I2C_SAINSMART_YWROBOT
   # Failing at the moment needs different library 
   #- restore_configs
   #- opt_enable LCD_I2C_SAINSMART_YWROBOT
   #- build_marlin
+  #
   # LCD_I2C_PANELOLU2
+  #
   - restore_configs
   - opt_enable LCD_I2C_PANELOLU2
   - build_marlin
+  #
   # LCD_I2C_VIKI
+  #
   - restore_configs
   - opt_enable LCD_I2C_VIKI
   - build_marlin
+  #
   # LCM1602
+  #
   - restore_configs
   - opt_enable LCM1602
   - build_marlin
+  #
   # Enable FILAMENTCHANGEENABLE
+  #
   - restore_configs
-  - opt_enable FILAMENTCHANGEENABLE
+  - opt_enable FILAMENTCHANGEENABLE ULTIMAKERCONTROLLER
   - build_marlin
+  #
   # Enable filament sensor
+  #
   - restore_configs
   - opt_enable FILAMENT_WIDTH_SENSOR
   - build_marlin
+  #
   # Enable filament sensor with LCD display
-  - restore_configs
-  - opt_enable ULTIMAKERCONTROLLER FILAMENT_WIDTH_SENSOR FILAMENT_LCD_DISPLAY
+  #
+  - opt_enable ULTIMAKERCONTROLLER FILAMENT_LCD_DISPLAY
   - build_marlin
+  #
   # Enable COREXY
+  #
   - restore_configs
   - opt_enable COREXY
   - build_marlin
+  #
   # Enable COREXZ
+  #
   - restore_configs
   - opt_enable COREXZ
   - build_marlin
+  #
   # Enable Z_DUAL_STEPPER_DRIVERS, Z_DUAL_ENDSTOPS
+  #
   - restore_configs
   - opt_enable_adv Z_DUAL_STEPPER_DRIVERS Z_DUAL_ENDSTOPS
   - pins_set RAMPS_14 X_MAX_PIN -1
   - opt_set_adv Z2_MAX_PIN 2
   - build_marlin
-  - restore_configs
+  #
+  #
   ######## Example Configurations ##############
+  #
   # Delta Config (generic)
+  - restore_configs
   - use_example_configs delta/generic
   - build_marlin
+  #
   # Delta Config (generic) + ABL + ALLEN_KEY
+  #
   - use_example_configs delta/generic
   - opt_disable DISABLE_MIN_ENDSTOPS
   - opt_enable AUTO_BED_LEVELING_FEATURE Z_PROBE_ALLEN_KEY
   - build_marlin
+  #
   # Delta Config (Mini Kossel)
+  #
   - use_example_configs delta/kossel_mini
   - build_marlin
+  #
   # Makibox Config  need to check board type for Teensy++ 2.0
+  #
   #- use_example_configs makibox
   #- build_marlin
+  #
   # SCARA Config
+  #
   - use_example_configs SCARA
   - build_marlin
+  #
   # tvrrug Config need to check board type for sanguino atmega644p
+  #
   #- use_example_configs tvrrug/Round2
   #- build_marlin
+  #
+  #
   ######## Board Types #############
+  #
+  # To be added in nightly test branch
+  #