mongoid: escape regular expression in search

Otherwise someone could attack the application with regular expression denial of service
added documentation for using autocomplete to submit multiple values separated by a given delimiter
slight change of wording
Merge pull request #199 from seldomatt/add-multiple-field-instructions-to-read-me

Add multiple field instructions to readme
When possible, use jQuery .on() rather than .live().

jQuery v1.9.0 no longer has .live() in the API.  Instead use .on() if
it is available.
Merge pull request #197 from Mic92/patch-1

mongoid: escape regular expression in search
Bump version to 1.0.11
Remove Ruby 1.9.2 from travis config
set license to MIT in gemspec
Merge pull request #212 from pivotal-cloudplanner/patch-1

set license to MIT in gemspec
Include Autocomplete functionality and forms builders integration on correcponding on_load event