changes from fako
update ObjectIdField and REAMDE.md
update README.md
update README.md
restful adjustments
changed order of fields
helpful error messages for unique field constaints
simpler NotUnique errors + ValidationError added
removed unused import
better error handling for validation errors
improved validation exception handling
updated error message
fixed error
bugfixes/improvements
wip
revert to old way
update document with identifier
removed unused imports
Merge branch 'update_embeddoc'

Conflicts:
	monkful/resources.py
	monkful/serializers/fields.py
added documentation/comments to code