Issue/9 Possibility to parse placeholders with mustache syntax

[ghost]

• Moved the unit tests so that they are in default folder and detected by ide
• Added library "should" for prettier unit test syntax
• Disabled eslint linebreak validation to be able to develope on windows
• Cleaned up and splitted up logic
• Added unit tests for nearly everything
• Added possibility to parse placeholders with mustache

[ghost]

I made a new project out of this with a lot more changes.

• 100% test coverage
• Better error handling
• Continuous-integration with ravis

So i am closing this pr for that reason.

The forked project: https://github.com/huzergackl/node-red-time-switch (npm package will follow tomorrow)