Password-generator-module

**Added:**

* **Function to check passwords strength :** Now it is possible to verify the strength level of the passwords that are generated to make sure they are secure,
the verification consists of 3 strength levels : High, Medium and Low
* An example of the new function has been added in the documentation

**Added:**

* Cryptography module
* **Function to encrypt passwords :** Now it is possible to encrypt the passwords that are generated
* **Function to decrypt passwords :** Now it is possible to decrypt the encrypted passwords
* Version number has been added to the main documentation page
* Two examples of the new functions have been added to the documentation
* A documentation link has been added in README.md


**Changed:**

* Documentation has been aesthetically improved

**Added**

* Module version added in source code

**Changed**

* The module information has been updated within the code
* When the user enters a number of characters for the password less than 4, the exception ValueError is called, before, the console only showed an error message
* Aesthetic changes in documentation

**Fixed:**

* Changelog link has been fixed on pypi page

**Added:**

* Documentation

**Added:**

* First release