Standardize README: lowercase repo names, consistent sections and verbiage

Author: noel-enquanta

README.md

@@ -27,8 +27,10 @@ Sign up at [voiceit.io/pricing](https://voiceit.io/pricing) to get your API Key
 
 <img src="./Graphics/getcredentials.png" alt="API Key and Token" width="400px" />
 
-## API calls
+## API Calls
+
 You can visit our [HTTP API 3.0 Documentation](https://voiceit.io/documentation) for detailed information on each API call.
+
 ## Support
 
 If you find this SDK useful, please consider giving it a star on GitHub — it helps others discover the project!
@@ -37,5 +39,5 @@ If you find this SDK useful, please consider giving it a star on GitHub — it h
 
 ## License
 
-VoiceIt3-Python is available under the MIT license. See the LICENSE file for more info.
+voiceit3-python is available under the MIT license. See the LICENSE file for more info.