Merge pull request #17 from jmacul2/master

Fixes for Django 1.6
Fix whitspace issue from #17
Update CI for Django 1.6
Version 0.2.2
raise ValidationError instead of AddrFormatError
Check for string length on EUI causes error
Added tests for raising ValidationError instead of AddrFormatError
Set MacAddressFormField widget's maxlength since it is no longer pulled from model validator.
Merge pull request #23 from sbrandtb/fix_mac_len

Check for string length on EUI causes error
Merge pull request #22 from sbrandtb/fix_exc

Raise ValidationError instead of AddrFormatError