Initialize platformio project

.gitignore

@@ -0,0 +1 @@
+.pioenvs

.travis.yml

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+# Reference: http://docs.platformio.org/en/latest/ci/travis.html
+
+language: python
+python:
+    - "2.7"
+
+sudo: false
+cache:
+    directories:
+        - "~/.platformio"
+
+install:
+    - pip install -U platformio
+
+script:
+    - platformio run

README.md

@@ -1,7 +1,7 @@
 Arduino Practice
 ========
-
+Please use [PlatformIO](http://platformio.org/) to build and execute project.
 ```bash
-# Install PlatformIO
-brew install platformio
+# Build project and upload to connected Arduino machine
+platformio run
 ```

lib/README.md

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+Libraries
+--------
+
+This directory is intended for the project specific (private) libraries.
+PlatformIO will compile them to static libraries and link to executable file.
+
+The source code of each library should be placed in separate directory, like
+`lib/private_lib/[here are source files]`.
+
+For example, see how can be organized `Foo` and `Bar` libraries:
+
+```
+|--lib
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |- readme.txt --> THIS FILE
+|- platformio.ini
+|--src
+   |- main.c
+```
+
+Then in `src/main.c` you should use:
+
+```cpp
+#include <Foo.h>
+#include <Bar.h>
+
+// rest H/C/CPP code
+```
+
+PlatformIO will find your libraries automatically, configure preprocessor's
+include paths and build them.
+
+See additional options for PlatformIO Library Dependency Finder `lib_*`:
+
+http://docs.platformio.org/en/latest/projectconf.html#lib-install

platformio.ini

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+# Reference: http://docs.platformio.org/en/latest/projectconf.html
+
+[env:atmelavr_arduino_uno_board]
+platform = atmelavr
+framework = arduino
+board = uno
+
+# Auto-uploading
+targets = upload