update README with installation steps for mip [skip ci]

Author: brainelectronics

README.md

@@ -73,6 +73,13 @@ station.isconnected()
 
 Install the latest package version of this lib on the MicroPython device
 
+```python
+import mip
+mip.install("github:brainelectronics/micropython-i2c-lcd")
+```
+
+For MicroPython versions below 1.19.1 use the `upip` package instead of `mip`
+
 ```python
 import upip
 upip.install('micropython-i2c-lcd')
@@ -82,6 +89,16 @@ upip.install('micropython-i2c-lcd')
 
 Install a specific, fixed package version of this lib on the MicroPython device
 
+```python
+import mip
+# install a verions of a specific branch
+mip.install("github:brainelectronics/micropython-i2c-lcd", version="feature/initial-implementation")
+# install a tag version
+mip.install("github:brainelectronics/micropython-i2c-lcd", version="0.1.0")
+```
+
+For MicroPython versions below 1.19.1 use the `upip` package instead of `mip`
+
 ```python
 import upip
 upip.install('micropython-i2c-lcd==0.1.0')
@@ -94,11 +111,18 @@ Install a specific release candidate version uploaded to
 MicroPython device. If no specific version is set, the latest stable version
 will be used.
 
+```python
+import mip
+mip.install("github:brainelectronics/micropython-i2c-lcd", version="0.1.0-rc3.dev1")
+```
+
+For MicroPython versions below 1.19.1 use the `upip` package instead of `mip`
+
 ```python
 import upip
 # overwrite index_urls to only take artifacts from test.pypi.org
 upip.index_urls = ['https://test.pypi.org/pypi']
-upip.install('micropython-i2c-lcd==0.1.0rc1.dev2')
+upip.install('micropython-i2c-lcd==0.1.0rc3.dev1')
 ```
 
 ### Manually

examples/main.py

@@ -49,14 +49,14 @@ def print_and_wait(text: str, sleep_time: int = 2) -> None:
 print_and_wait("Turn LCD backlight off")
 
 # get current backlight value
-print_and_wait("Backlight value: {}".format(lcd.get_backlight()))
+print("Backlight value: {}".format(lcd.get_backlight()))
 
 # turn LCD on
 lcd.backlight()
 print_and_wait("Turn LCD backlight on")
 
 # get current backlight value
-print_and_wait("Backlight value: {}".format(lcd.get_backlight()))
+print("Backlight value: {}".format(lcd.get_backlight()))
 
 # clear LCD display content
 lcd.clear()