Added RGB LED and WIFI-Connection Programs

02_Connecting to Wifi/readme.md

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+# 02_Connecting_to_Wifi
+This program is to connect to WiFi using NodeMCU
+To run the program use the following ampy command
+
+
+```bash
+    ampy --port /dev/tty.SLAB_USBtoUART run wifi_connect.py
+```

02_Connecting to Wifi/wifi_connect.py

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+import network
+    sta_if = network.WLAN(network.STA_IF)
+    if not sta_if.isconnected():
+        print('Connecting to network...')
+        sta_if.active(True)
+        sta_if.connect('<Your ESSID>', '<Password>')
+        while not sta_if.isconnected():
+            pass
+    print('Network config:', sta_if.ifconfig())

03_RGB_LED/readme.md

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+# 02_RGB_LED_COLOUR_VARIATIONS
+- This program is for controlling RGB LED using NodeMCU
+- Run this program after setting up the hardware part. For more information visit : 
+[Controlling RGB LED using NOdeMCU](https://blog.thepodnet.com/nodemcu-rgb-led-using-micropython/)
+
+After setting up the circuit, run the program by using following ampy command in terminal
+
+```bash
+    ampy --port /dev/tty.SLAB_USBtoUART run rgb_led.py
+```

03_RGB_LED/rgb_led.py

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+import machine
+import time
+
+blue = machine.Pin(14, machine.Pin.OUT)
+red = machine.Pin(12, machine.Pin.OUT)
+green = machine.Pin(13, machine.Pin.OUT)
+
+while True:
+        green.on()
+        time.sleep_ms(500)
+        green.off()
+        time.sleep_ms(500)
+        blue.off()
+        time.sleep_ms(500)
+        blue.on()
+        time.sleep_ms(500)
+        red.on()
+        time.sleep_ms(500)
+        red.off()
+        time.sleep_ms(500)