init boolean search filter
updated Readme and removed docs from master
relative link change to full README
use absolute link to other repo's README
add filter function
add underscore to filter
improve boolean search
code clean up. Make separate service for boolean search
fix error with filtered items lenght
fix injection with booleanSearchEngine
add clean function
merge
add search by all fields
add simple tag expression
add whitespace to tag expression
improve pattern selection
implement add expression
code clean up
init boolean search filter
add filter function