* add sample for si7021 temperature read over i2c

* add Si7021 device class

* remove ReadTempFromSi7021.cs

* add device sample for Si7021 and humidity read command

* remove reference to README in Si7021 csproj file

Added UART pins as GPIO pins for Board/Logical conversion

* Basic cleanup in GPIO files

* Basic comment cleanup in GPIO files

* Removed othing lingering words

* Another round of GPIO cleaning

* Removed a couple more words

* Added readonly and updated casing

* Better method grouping and synced constructor summaries

* Added How to Prepare a Publish Profile doc

* Updated title

* Heck consistent wording

* Added for win-arm

* Updated  CLI section and file transfer tools

* Removed irrelevant section

* Replaced spaces with dashes

* Forgot link

* Added device binding template readme

* Folder name was clipped

* Heck wording

* implement fallback enumeration for hummingboard - where PWM friendly names are not currently set

* Added initial iot-device-binding template

* Move to templates folder

* Removed iot from naming

* Added not required note

fix PWM output by changing duty cycle after starting pin output

* Add initial script-run command

* Adjusted command name

* Add BMP280 device binding

* Fixing according to comments
Renaming, binary format, readme, solution file.

* the missed sample file update

* No more vars
Renaming and moving around for better structure
Made read methods private

* Changed to BinaryPrimitives
Simplified ByteToSampling

* coefficients/calibrationdata is now short/ushort instead of int/uint

* even better read method naming

* Moved reading calibrationdata to calibrationdata class

* Better Register enum
Fixing read24bits

* Added initial binding template

* Updated links

* Fixed link

* Update main docs README

* Add basic description back

* Headers and spacing

* Maker resources

* Link to DevicesApiTester

* More maker resources

* Added Device Bindings link

* Reordered interfaces

* Added Pine64 and reordered dev sections

* Added Autodesk EAGLE link

* Added dev board GitHub links

* Added instructables link

* Added KiCad link

* Added Hackaday link

* Added FreeCAD link

* Reordered dev boards and .NET Core notes to top

* heck wording

* Add initial Mcp23xxx binding

* Added Fritzing files with I2C connection

* Removed conneciton link from I2C circuit

* Added summary comments for Bank

* Removed controller code based on feedback

* Basic comment cleanup in supporting SPI files

* Added wording from feedback

Create initial (empty) 3rd party notices with contact details

There was a typo, but also both states can have current depending on hardware configuration.  A Low has ability to sink current.

Various code cleaning and functionality improvements

Add PWM output sample to DeviceApiTester

refine device binding section

* simplify and fix serialport-arduino sample

* add sdk version in global.json

Commenting out HummingBoard default picking logic

Add fritzing diagram and reorder sections

Update installation instructions

Update roadmap

Update README.md

Fix spelling of Raspberry