Merge pull request #67 from abenari/master

fixed has_many_through join function for polymorphic relations
Bump version to 2.6.2
Merge pull request #68 from abenari/master

fixes an issue with has_many_through and polymorphic associations
Bump version to 2.6.3
Add support for jQuery > 1.9 (issue #70)
Merge pull request #71 from rpaterson/jQuery19

Add support for jQuery > 1.9 (issue #70)
Bump version to 2.6.4
Add definition :complete => false to hide deprecated fields in autocompleter but still perform search
Merge pull request #72 from isratrade/autocomplete_false

Add definition :complete => false to hide deprecated fields in autocompleter but still perform search
Add support for jQuery > 1.9 (issue #70)
Merge pull request #73 from rpaterson/jQuery19

Add support for jQuery > 1.9 (issue #70)
fixed has many through join when the relation is a belong_to b belong_to c.
current code expect a has_many b belong_to c.