Update packages.md

grammmaaarr
Various spelling fixes. Probably missed a bunch.
Update change in Set Mutator syntax

As per this commit and its discussion https://github.com/illuminate/database/commit/be7246d44f4667e27a196cbf91225f758b862004#L0R916 and then this issue, https://github.com/illuminate/database/issues/107 the syntax for mutators has changed.
Merge pull request #3 from robmeijer/master

Fix typo in Routing docs
Merge pull request #6 from Kindari/patch-1

Update change in Set Mutator syntax
Merge pull request #4 from Robbo-/patch-1

Update packages.md
Merge pull request #5 from JesseObrien/spellchecks

Various spelling fixes. Probably missed a bunch.
Minor spelling error.
Merge pull request #7 from trq/feature/spell-error

Minor spelling error.
Added information on increments().
Update templating.md

Should this be 'layouts' rather than 'layout' ?
incriments ('id') is primary key
Typo in Lifecycle

Should be 'enters' I would say.
Merge pull request #11 from Stayallive/patch-1

Typo in Lifecycle
Merge pull request #10 from InFog/master

increments('id') is by default primary key
Merge pull request #9 from helmut/patch-1

Small typo?