Dctrackclient

- Add location API endpoints
- Minor updates to readme examples (text fixes)
- HTTP method is inferred by the function name (e.g. `getItem()` = GET request)
- Remove `method` from `api.json`
- Show message when no documentation is provided

- Added API functions for managing item ports
- Style updates in readme file

- Major updates to the example guide in readme file
- Add `Content-Type: application/json` header in the JavaScript library

- Generate JavaScript functions
- JavaScript `Client` is now an instance class
- Update installation commands in `README.md` to show version number
- Update JavaScript setup documentation
- Fix regular expressions in JSON schema
- Function and parameter names must start with a letter, but can have numbers and underscores
- Stricter checking in JSON schema
- Improved error reporting
- Readme badges are now clickable links

- Remove `types.d.ts` from NPM package
- Improve installation documentation in `README.md`

- Update badges in `README.md`
- Convert NPM package to module