add gitignore and platformio.ini for development of the library with platformio

Author: corneliusmunz

.gitignore

@@ -48,3 +48,10 @@ Temporary Items
 
 
 \.vscode/
+
+# Platform.io stuff
+.pioenvs
+.piolibdeps
+.clang_complete
+.gcc-flags.json
+.pio

platformio.ini

@@ -0,0 +1,24 @@
+; 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
+; https://docs.platformio.org/page/projectconf.html
+
+[platformio]
+src_dir = examples/TrainHub ;this points to a single example *.ino sketch which should be build with platform.io
+
+[env:heltec_wifi_kit_32]
+platform = espressif32
+board = heltec_wifi_kit_32
+framework = arduino
+lib_extra_dirs = ${workspacedir} ;this points to the project root directory with the legoino library
+lib_deps = h2zero/NimBLE-Arduino@^1.0.2 ;this is the dependent library
+upload_speed = 115200
+monitor_speed = 115200
+;debug_tool = esp-prog
+;debug_init_break = tbreak setup
+