Image-frequency-analysis

Minor changes to the readme.md file

In v0.2.7 there are two minor changes:

Now calling the FrequencyAnalysis class will only create the Class object. After the object creation, the perform_image_frequency_analysis definition should be called using the object to initiate the actual transformation process.

The perform_image_frequency_analysis definition will return the transformed image as a numpy ndarray, which can be stored in a variable and used for further analysis

Made changes to move the project description from the setup.py file to pyproject.toml file