Merge pull request #2 from antonpaisov/master

Update README.md
sorting improved, avoid searcing when pattern is blank
since subclasses can define "default_sort_(attribute|order)" and "allowed_sort_attributes" as private methods, we will start calling them with "send"
fix sorting helper
moved to public codeclimate
disabled codeclimate code coverage
Update README.md
droped textacular support, refactored
unaccent support in search
private mehod call fixed
coalesce on t_search
trigram search
option to ignore case during search
lowercase array value
search config
pg_search processor config
travis fix
travis ruby 2.1.1 support
typecast array to text[]
Merge branch 'mincer_config'

Conflicts:
	README.md
	lib/mincer/processors/search.rb
	lib/mincer/processors/sort.rb
	spec/lib/processors/search_spec.rb
	spec/spec_helper.rb