Merge remote-tracking branch 'upstream/master'
Merge pull request #8 from gsegura/master

Adding security to the BCC for the search repository
Merge branch 'master' of github.com:gsegura/opencommercesearch
Merge remote-tracking branch 'upstream/master'
add functionality to blacklist facet filter elements. for example if
facet scale returns:
1. us scale 100
2. uk scale 1

we can add a blacklist entry to remove the 'uk scale' element from the
results