export BaseField or it will not be possible to extend it from external
modules
first implementation of a query-builder
fixed bug and added getQuery function returning the constructed query
added QueryBuilder to main.js
Merge branch 'lucene47' of https://github.com/grob/lucindex
no need for createQuery anymore. use querybuilder for query-construction
adapted simpleindex_test.js
added QueryBuilder.reset()
Merge pull request #5 from kmfdm1/master

Got rid of createQuery and added QueryBuilder