First commit

.gitignore

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+.pioenvs
+.piolibdeps

.travis.yml

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+language: python
+python:
+    - "2.7"
+
+sudo: false
+cache:
+    directories:
+        - "~/.platformio"
+
+install:
+    - pip install -U platformio
+
+script:
+    - platformio run

lib/readme.txt

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+
+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:
+
+#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.
+
+More information about PlatformIO Library Dependency Finder
+- http://docs.platformio.org/page/librarymanager/ldf.html

platformio.ini

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+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; http://docs.platformio.org/page/projectconf.html
+
+[env:d1]
+platform = espressif8266
+board = d1
+framework = arduino
+upload_speed = 921600

src/k2ping.ino

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+#include <ESP8266WiFi.h>
+
+// Model: WeMos D1
+#define D0 3
+#define D1 1
+#define D2 16
+#define D3 5
+#define D4 4
+#define D5 14
+#define D6 12
+#define D7 13
+#define D8 0
+#define D9 2
+#define D10 15
+
+void setup() {
+  ;
+}
+
+void loop() {
+  ;
+}