Update _posts/07-07-01-Error-Reporting.md
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages

Conflicts:
	_posts/07-07-01-Error-Reporting.md
Added singleton pattern to the Design-Patterns page
Added a sentence defining the benefit or using DI over the singleton pattern
Merge pull request #211 from gerardroche/gh-pages

Trivial improvements on Error Reporting best practice
Merge pull request #236 from coreymcmahon/singleton-pattern

Added singleton pattern to the Design-Patterns page