Update README.md

Author: GitHub4Eddy

README.md

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 # accuweather_pollen
+
 This QuickApp gives access to real-time and 5-day forecast pollen count and risk category for grass pollen, mold spores, ragweed pollen and tree pollen of any location from Accuweather.com
+
+Pollen is a fine powder produced by trees and plants
+Pollen can severely affect people, especially those with different ailments such as asthma and respiratory issues.
+It can aggravate these existing conditions or cause these issues in high risk groups
+
+Grass Pollen: Pollen grains from grasses
+Mold Spores: The fungus produces spores that can become airborne
+Radweed Pollen: Ragweeds are annual and perennial herbs and shrubs. A single plant may produce about a billion grains of pollen per season. 
+Tree Pollen: Pollen from trees such as Birch and Oak
+
+The QuickApp provides a risk evaluation with levels in particles/m³
+
+Grass Pollen
+- Category Name  Begin Range  End Range
+- Low            0            4.99
+- Moderate       5            19.99
+- High           20           199.99
+- Very High      200	          299.99
+- Extreme        300          1000000
+
+Mold Spores
+- Category Name  Begin Range  End Range
+- Low            0            6499.99
+- Moderate       6500         12999.99
+- High	          13000        49999.99
+- Very High      50000        64999.99
+- Extreme        65000        1000000
+
+-Ragweed Pollen
+- Category Name  Begin Range  End Range
+- Low            0            9.99
+- Moderate       10           49.99
+- High           50           499.99
+- Very High      500          649.99
+- Extreme        650          1000000
+ 
+Tree Pollen
+- Category Name  Begin Range  End Range
+- Low            0            14.99
+- Moderate       15           89.99
+- High           90           1499.99
+- Very High      1500         2999.99
+- Extreme        3000         1000000
+
+
+IMPORTANT
+- You need an API key from https://developer.accuweather.com
+- The API is free up to 50 API calls/day, one key
+
+
+Version 0.1 (22th August 2021)
+- Initial version
+- ToDo: convert remaining date/time to format
+
+
+Variables (mandatory): 
+- apiKey = Get your free API key from AccuWeather
+- locationKey =  AccuWeather number from your HC3 Lon/Lat
+- interval = [number] in seconds time to get the data from the API
+- timeout = [number] in seconds for http timeout
+- debugLevel = Number (1=some, 2=few, 3=all, 4=simulation mode) (default = 1)
+- icon = [numbber] User defined icon number (add the icon via an other device and lookup the number)