Added missing example to controllers.md
Update upgrade guide.
Add clarification.
Typo fix in upgrade.md
Fix typo.
fixing spelling mistakes using aspell

Conflicts:
	billing.md
	homestead.md
	migrations.md
	queues.md
	releases.md
	upgrade.md
Fix wording in extending.md
Fix wording in pagination.md
Merge pull request #787 from nikush/patch-2

Fix wording in extending.md
Merge pull request #786 from nikush/patch-3

Fix wording in pagination.md
Merge pull request #780 from nikush/patch-1

Fix typo.
Merge pull request #783 from lukearmstrong/4.1

fixing spelling mistakes using aspell
Document registering command from a service provider.
Merge pull request #775 from fareez-ahamed/4.1

Typo fix in upgrade.md
Merge pull request #743 from YavorK/patch-2

Added missing example to controllers.md
Add note about serializing objects.
Fixed positioning of anchor tags for consistency

This is required to parse markdown files with other parsers
Merge pull request #805 from mnishihan/patch-1

Fixed positioning of anchor tags for consistency
Update templates.md
Merge pull request #836 from InstanceOfMichael/patch-2

Section "Extending Blade" is wrong