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Update usage section in README

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ivankravets committed Jan 10, 2018
1 parent 5867d6d commit b3078fb770ce5995f72ded8061127fe840583aea
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  1. +22 −7 README.md
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@@ -9,17 +9,32 @@ Lattice iCE40 are the first FPGAs fully usable by open source tools.
# Usage
1. [Install PlatformIO Core](http://docs.platformio.org/page/core.html)
2. Install Lattice iCE40 development platform:
1. [Install PlatformIO](http://platformio.org)
2. Create PlatformIO project and configure a platform option in [platformio.ini](http://docs.platformio.org/page/projectconf.html) file:
```bash
# install the latest stable version
> platformio platform install lattice_ice40
## Stable version
# install development version
> platformio platform install https://github.com/platformio/platform-lattice_ice40.git
```ini
[env:stable]
platform = lattice_ice40
board = ...
...
```
## Development version
```ini
[env:development]
platform = https://github.com/platformio/platform-lattice_ice40.git
board = ...
...
```
# Configuration
Please navigate to [documentation](http://docs.platformio.org/page/platforms/lattice_ice40.html).
# Credits
* [Apio](https://github.com/FPGAwars/apio)

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