Add new section with interesting articles and case studies

[fzy-github]

• Project Name: N/A

• Project URL: N/A

• Project Description: N/A

• Why it should be added to awesome-ble:

This PR contains suggestion to add new section with curated list of interesting articles and case studies related to BLE development as well as one of such articles.

• [ ] At least 15 stars (if a GitHub project) N/A
• [x] Updated README.md instead of README

[matteocrippa]

thanks @fzy-github