Updated Library use in README

Update the example code according to latest [v0.2.0](https://github.com/PipableAI/pip-library-parser/releases/tag/v0.2.0)

README.md

@@ -53,26 +53,35 @@ The model is open source under apache 2.0. License
 !pip3 install atlassian-python-api
 
 
+from pip_library_parser import CodeToDocGenerator
+from atlassian import Jira
+
 import torch
-from pip_library_parser import generate_module_docs
-from atlassian.jira import Jira
+torch.set_default_device("cuda")
 
+# Instantiate the CodeToDocGenerator
+generator = CodeToDocGenerator()
 
-torch.set_default_device("cuda")
+# Generate docstrings for the module's functions and methods
+module = Jira
+module_name = "atlassian.Jira"
 
-docs = generate_module_docs(Jira, "atlassian.jira.Jira")
+docs = generator.generate_module_docs(module, module_name)
 print(docs)
 ```
 
 ```python
-from pip_library_parser import generate_docstring_from_pip_model
+from pip_library_parser import CodeToDocGenerator
+
+# Instantiate the CodeToDocGenerator
+generator = CodeToDocGenerator()
 
 code_snippet = """
 def example_function(x):
     return x * 2
 """
 
-docstring = generate_docstring_from_pip_model(code_snippet)
+docstring = generator.generate_docstring_from_pip_model(code_snippet)
 print("Generated Docstring:")
 print(docstring)
 ```