implement content rule
add deferred loading
disable detection on the settings file itself
Revert "disable detection on the settings file itself"

This reverts commit 53f991f6f80701ce07f17246cfb6f7f5a4a97fd5.
change handlebars pattern
Merge pull request #16 from gabrielecirulli/find_in_content

Implement 'content' rule to match anywhere inside file