Merge pull request #2 from dogwood008/release_candidate

Bugfix: Res#received_anchors may throw NoThreGivenException.
Thre#reses is able to have a param which is Array or "Fixnum"
Refactoring: code format
replace 'context' with 'describe' in test file
Refactoring: code format
Bugfix: DatParseException may be thrown when Res don't have ID.
Add alias: Thre#res for Thre#reses
Refactoring: for yard
Refactoring: code format