Update README: Add Maven and Gradle Instructions

[maulikam]

The current README file instructs users to download the JAR file for the Kite Connect Java library. This approach is not ideal for project management.

This task involves updating the README file to include instructions for adding the library as a dependency using both Maven and Gradle.

Specific changes:

• Add a section titled "Adding the Dependency" with subsections for:
  • Maven: Include instructions with an example dependency snippet in pom.xml.
  • Gradle: Include instructions with an example dependency snippet in build.gradle.
• Update any other relevant sections of the README to reflect these changes.

Testing:

• Verify that the updated README accurately reflects the Maven and Gradle dependency instructions.