Adding more mongodb operators

Switch to Laravel 4.2

Typo

Merge branch 'master' of github.com:jenssegers/Laravel-MongoDB

Add elemMatch operator

Adding delete method for embedded documents

Merge pull request mongodb#192 from ilesinge/belongstomany_sync

Backport Eloquent BelongsToMany::sync function signature

Fix ID conversion for toJson and toArray

Adding tests for connection

Small tweak to embedsMany contains method