renamed query to queryBuilder for consistency
added quick querystring for count api
Closes #16
added quick querystring for delete by query api
Closes #18
added quick querystring for explain api
Closes #17
renamed query to queryBuilder for consistency

Conflicts:
	src/main/java/org/elasticsearch/shell/client/builders/core/ValidateQueryRequestBuilder.java
added quick querystring for validate api
Closes #32
optimized import