Markdown fixes
Small BelongsToMany tweak
Merge branch 'master' of github.com:jenssegers/Laravel-MongoDB
Fixed sync bug
Added data to tests
Merge pull request #76 from DyeH/master

Fixed sync bug
Add tests for detach
Merge branch 'master' of github.com:jenssegers/Laravel-MongoDB
Adding tests for custom belongsToMany keys
Updating readme for #75
Mergin with master