Text Parser

- fix for resource parsing when they include inline link definitions
Text Parser issue

- added a compatibility patch for link attributes
- extended the parser rspec with regards to links
- added an rspec test for parsing the text representation of resources with inline links
Text Parser / Mixins

- added a compatibility patch for link categories
- added an rspec test for parsing the text representation of resources with inline links and mixins
- fixed some issues with Mixin handling
Merge pull request #6 from ffeldhaus/master

Text Parser fix