Added urlToLink filter.
Added reference a github gist.
Starting to learn the ways of the angular :), ng-bind-html combined with $sce from ngSanitize works when adding markup.
Linted filters.
Made ngSanitize available in karma
Only replace urls in existing text.
Added unit-tests for urlToLink filter.
Merge pull request #39 from petteraas/urlToLinkFilters

Added urlToLink filter.