refactoring and documenting of code
Extract matching routine and add an alternative
Add fuzzyMatch routine
Write fuzzyMatch documentation
keep track of cache size
Make cache local to fuzzyMatch function call

Fixes #4  because the cache is now garbage collected after each call to
fuzzyMatch()
Show a notification metioning the updated bookmark
mention chrome notifications doc url
Closes #11
Merge branch 'notification' into MergeNotificationAndFuzzyMatch

Conflicts:
	src_chrome/eventPage.js
Merge pull request #5 from jeroendv/MergeNotificationAndFuzzyMatch

Merges in refactoring, fuzzy matching, and notification informing user of what bookmark was changed.