Think about to fix the issues found by adapter checker

[ioBrokerChecker]

I am an automatic service that looks for possible errors in ioBroker and creates an issue for it. The link below leads directly to the test:

https://adapter-check.iobroker.in/?q=https://raw.githubusercontent.com/ioBroker/ioBroker.vpn

• [ ] [E021] "licenses" in package.json are depricated. Please use only "license": "NAME" field.
• [ ] [E104] No common.titleLang found in io-package.json
• [ ] [E150] No common.connectionType found in io-package.json
• [ ] [E152] No common.dataSource found in io-package.json
• [ ] [E124] Main file not found under URL: https://raw.githubusercontent.com/ioBroker/ioBroker.vpn/master/gulpfile.js
• [ ] [E504] "gulpfile.js found in package.json, but not found as file
• [ ] [E300] Not found on travis. Please setup travis

I have also found warnings that may be fixed if possible.

• [ ] [W113] Adapter should support compact mode
• [ ] [W400] Cannot find "vpn" in latest repository
• [ ] [W801] .npmignore not found
• [ ] [W901] .gitignore not found

Thanks, your automatic adapter checker.

[ioBrokerChecker]

Do you need help fixing the bugs?

[ioBrokerChecker]

Thanks, that all bugs have been fixed.