slovenian translation link added
Typo in 06-01-01-Dependency-Injection.md
Added Hoa
Update 13-03-01-Components.md
Added simple CONTRIBUTING.md.
Mention the book.
Merge pull request #366 from codeguy/feature/contributing

Added simple CONTRIBUTING.md.
Formatting
Can't spell.
xdebug link typo fixed
Merge pull request #367 from peterkokot/patch-3

xdebug link typo fixed
Update 08-02-01-Errors.md
Fixed grammar error to indicate possession of sentence.
Merge pull request #369 from KLVTZ/gh-pages

Fixed grammar error to indicate possession of sentence.
Merge pull request #355 from peterkokot/patch-1

Slovenian translation link added
Update translation