Merge pull request #49 from shouze/feat-add-hash-trait

add hash trait

Fix redis issue, predis changed its pipeline instance.

Can add a fieldLocation, usable for search/sort on query builder.

Merge pull request #45 from venimus/distinct-count

Always use distinct when counting entries in KnpPager

Merge pull request #40 from phansys/master

Resolve Doctrine proxies to real entity names

Merge pull request #37 from cordoval/more-work-on-lib

typos and improvements

Fix typo on filename.

If knp_pager doesn't have paginator dependency injected, throw an exc…

…eption.