add upload section to chatbots docs

python/hal9/filetotext.py

@@ -21,6 +21,7 @@ def extract_from_url(message):
         temp_file.write(response.read())
       temp_file_path = temp_file.name
 
+    import textract
     text = textract.process(temp_file_path).decode("utf-8")
     os.remove(temp_file_path)
     return text

python/pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "hal9"
-version = "2.3.0"
+version = "2.3.1"
 description = ""
 authors = ["Javier Luraschi <[email protected]>"]
 readme = "README.md"

website/learn/genapps/apps/chatbots.md

@@ -62,3 +62,16 @@ for i in range(1, 11):
 ```
 
 These concepts will prove useful to build our first generative charbot in the [LLM Apps](../llmapps/intro.md) section.
+
+## URLs
+
+Hal9 encourages uploads and links to be processed as URLs. For example, user can reference or upload a PDF as 'https://www.clickdimensions.com/links/TestPDFfile.pdf' which can be read from `input`.
+
+To help assist with processing references, Hal9 provides an `input` function which extracts the text contents of a URL directly as text to easily support managing uploads.
+
+```python
+import hal9 as h9
+
+contents = h9.input('Enter a URL: ')
+print(f"Contents: {contents}")
+```