Disable Makefile and update README

Makefile

-# This makefile depends on targetDefs.* files in the Legato root folder. In order to facilitate the
-# inclusion of these files, make needs to be invoked with a --include-dir=$LEGATO_ROOT parameter.
-TARGET:=wp85
-
-
-# Default targets definitions from Framework
-include targetDefs
-
-.PHONY: all $(TARGET)
-all: $(TARGET)
-
-# The comment below is for Developer Studio integration.  Do not remove it.
-# DS_CLONE_ROOT(MANGOH_ROOT)
-MANGOH_ROOT=$(shell pwd)
-
-# The comment below is for Developer Studio integration.  Do not remove it.
-# DS_CUSTOM_OPTIONS(EXTRA_OPTS)
-EXTRA_OPTS = -s "$(MANGOH_ROOT)/apps/GpioExpander/gpioExpanderService" \
-             -s "$(MANGOH_ROOT)/apps/RedSensorToCloud"
-
-$(TARGET):
-	export MANGOH_ROOT=$(MANGOH_ROOT) && \
-	mksys \
-	$(MKSYS_FLAGS) \
-	-t $(TARGET) \
-	-i "$(LEGATO_ROOT)/interfaces/supervisor" \
-	-i "$(LEGATO_ROOT)/interfaces/positioning" \
-	-i "$(LEGATO_ROOT)/interfaces/airVantage" \
-	-i "$(LEGATO_ROOT)/interfaces/modemServices" \
-	-i "$(LEGATO_ROOT)/interfaces" \
-	-i "$(LEGATO_ROOT)/interfaces/atServices" \
-	-i "$(LEGATO_ROOT)/interfaces/wifi" \
-	-i "$(LEGATO_ROOT)/interfaces/secureStorage" \
-	-i "$(LEGATO_ROOT)/interfaces/logDaemon" \
-	-s "$(LEGATO_ROOT)/modules/WiFi/service" \
-	-s "$(LEGATO_ROOT)/components" \
-	-s "$(LEGATO_ROOT)/modules/WiFi/apps/tools/wifi" \
-	-s "$(LEGATO_ROOT)/apps/platformServices/airVantage" \
-	-s "$(LEGATO_ROOT)/apps/platformServices" \
-	-s "$(LEGATO_ROOT)/apps/tools" \
-	$(EXTRA_OPTS) \
-	-C -g -X -g -L -g \
-	mangOH_Green.sdef
-	#mangOH_Red.sdef
-
-clean:
-	rm -rf /tmp/mkbuild_* _build_* *.update
+all:
+	$(info Bug LE-7663 prevents this Makefile from building a correct Legato system.)
+	$(info Once this bug is fixed in a stable version of Legato, the Makefile will)
+	$(info be restored.  For now, build the mangOH system by executing the following)
+	$(info command from a Legato working copy:)
+	$(info     make wp85 SDEF_TO_USE=$$MANGOH_ROOT/mangOH_Red.sdef MKSYS_FLAGS="-s $$MANGOH_ROOT/apps/GpioExpander/gpioExpanderService -s $$MANGOH_ROOT/apps/RedSensorToCloud")
+	$(info Note that you must first define MANGOH_ROOT.  eg. export MANGOH_ROOT=~/mangOH)
+	exit 1

README.md

 # MangOH
 
-Base project containing apps playing with MangOH hardware
+Base project containing apps and drivers for the mangOH hardware
 
 ## Setup
 
-### Linux
-
-Open a terminal and load Legato development environment
-* `source ~/legato/packages/legato.sdk.latest/resources/configlegatoenv`
-
-### Windows
-
-Launch the **Legato Command Line** shortcut to load the Legato development environment
-
-### Get the source code
-
-Clone this repository and the submodules it requires
-* `git clone --recursive git://github.com/mangOH/mangOH`
-
-### Build
-
-Build the mangOH Legato system
-* `make --include-dir=$LEGATO_ROOT wp85`
+1. Download and install the appropriate toolchain from [source.sierrawireless.com](https://source.sierrawireless.com/resources/legato/downloads/)
+1. Get the Legato source code as described by the [Legato README](https://github.com/legatoproject/legato-af/blob/master/README.md)
+1. Clone the mangOH source code by running `git clone --recursive git://github.com/mangOH/mangOH`
+1. `cd` into the Legato working folder and run the following command to build a system for the mangOH Red: `make wp85 SDEF_TO_USE=$$MANGOH_ROOT/mangOH_Red.sdef MKSYS_FLAGS="-s $$MANGOH_ROOT/apps/GpioExpander/gpioExpanderService -s $$MANGOH_ROOT/apps/RedSensorToCloud"`
+1. Run `./bin/legs` to put the Legato tools into `$PATH`
+1. Run `instlegato wp85 192.168.2.2` to install the system onto the mangOH connected via a USB cable to the CF3 USB port.