Adding more to the readme

Author: Jim Bennett

.pylintrc

@@ -217,7 +217,7 @@ indent-after-paren=4
 indent-string='    '
 
 # Maximum number of characters on a single line.
-max-line-length=150
+max-line-length=140
 
 # Maximum number of lines in a module
 max-module-lines=1000

README.rst

@@ -17,8 +17,15 @@ Introduction
     :target: https://github.com/psf/black
     :alt: Code Style: Black
 
-CircuitPython library for the Azure custom vision SDK
+CircuitPython prediction library for the Azure custom vision service.
 
+To use this library, you will need to create a custom vision project at [CustomVision.ai](https://customvision.ai?WT.mc_id=circuitpythoncustomvisionprediction-github-jabenn).
+Once you have your project, you will need to train either an image classification model, or an object detection model. You can then use this library to make predictions against this model.
+
+You can read more on how to do this in the Microsoft docs:
+
+* [Train an image classifier](https://docs.microsoft.com/azure/cognitive-services/custom-vision-service/getting-started-build-a-classifier?WT.mc_id=circuitpythoncustomvisionprediction-github-jabenn)
+* [Train an object detection model](https://docs.microsoft.com/azure/cognitive-services/custom-vision-service/get-started-build-detector?WT.mc_id=circuitpythoncustomvisionprediction-github-jabenn)
 
 Dependencies
 =============

customvision.py

@@ -109,7 +109,7 @@ def __init__(self, response) -> None:
             self.predictions.append(prediction)
 
 
-def __run_request(url, body, headers):
+def __run_request_with_retry(url, body, headers):
     retry = 0
     r = None
     logger = logging.getLogger("log")
@@ -180,7 +180,7 @@ def __process_image_url(self, route: str, project_id: str, published_name: str,
         headers = {"Content-Type": "application/json", "Prediction-Key": self.__api_key}
 
         body = json.dumps({"url": url})
-        result = __run_request(endpoint, body, headers)
+        result = __run_request_with_retry(endpoint, body, headers)
         result_text = result.text
 
         return ImagePrediction(result_text)
@@ -190,7 +190,7 @@ def __process_image(self, route: str, project_id: str, published_name: str, imag
 
         headers = {"Content-Type": "application/octet-stream", "Prediction-Key": self.__api_key}
 
-        result = __run_request(endpoint, image_data, headers)
+        result = __run_request_with_retry(endpoint, image_data, headers)
         result_text = result.text
 
         return ImagePrediction(result_text)