reducing README contents
design updates to search, settings and tags dropdown
search box icon method revision
media query edits to search bar
Allow to use up/down arrow keys
Merge pull request #66 from Fuhrmann/dev

Allow to use up/down arrow keys (49)
Update bower components
Add support for unit tests
Merge pull request #67 from outcoldman/dev

Add support for unit tests (#63)
init boolean search filter
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
add search by all fields
add simple tag expression
add whitespace to tag expression