add no results for [blank] message for searches with no result.

Conflicts:
	app/views/refinery/search/show.html.erb
Add more install infos to readme.md, fixes #23
Updated instructions for rubygems installation
Added travis instructions.
Add Encoding
Merge remote-tracking branch 'mamedov/patch-1'

Conflicts:
	readme.md
	refinerycms-search.gemspec

Fixes #32