Standardises code examples.

Standardise whitespace between fn name and bracket.

Standardises code examples for module pattern.

Checks revealing module code example.

Checks second revealing module fn.

Checks singleton code examples.

Checks second singleton code example.

Checks observer example code.

Checks observer code example.

Checks observer code example.

Checks up to mediator code examples.

Checks up to knockout section.

Most spacing is now consistent.
Merge branch 'style' of https://github.com/Cheeseen/essential-js-design-patterns into style