Add platformio.ini and update .gitignore

Author: 3urobeat

.gitignore

@@ -1 +1,6 @@
-nodemcu-clock.code-workspace
+.pio
+.vscode
+build
+.ycm_extra_conf.py
+nodemcu-clock.code-workspace
+lib/README

platformio.ini

@@ -0,0 +1,16 @@
+; 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
+
+[env:nodemcuv2]
+platform = espressif8266
+board = nodemcuv2
+framework = arduino
+upload_speed = 921600
+lib_deps = marcoschwartz/LiquidCrystal_I2C@^1.1.4