Update readme mongodb#744, fixes #mongodb#746

Fixes mongodb#736

Fix auth for L5.2

Forgot to disable transaction

Add grammar to 2.2 as well, fixes mongodb#729

Merge pull request mongodb#727 from jenssegers/analysis-XpeOKL

Applied fixes from StyleCI

Pass options from Eloquent builder to Query builder, fixes mongodb#558

Add Jenssegers\Mongodb\Eloquent and use dummy class

Revert MongoId::isValid() and use L5.1

Add small example