Bump gem version in Gemfile.lock
Support short-hand rendering of partials

Before: required syntax for rendering was:
`render partial: 'partial_name', collection: @collection, cache: true`

After: `render @collection, cache: true` works as well.

`cache: false` also disables caching as well now.
Use respond_to?(:call) instead of is_a?(Proc)
Remove trailing whitespace
Update README with new supported syntax
Significant speed increase for large collections
Bugfix: read_multi expects multiple arguments, not an array.
Merge remote-tracking branch 'swalkinshaw/partial_shortform_support'