Fixed StringBuilder and() method so that as CQL is readable

.append("AND ") to .append(" AND ") (Line 379)
Add support for unlogged batch in the query builder

JAVA-113 #fixes
Merge pull request #100 from mholland231/master

Fixed issue: Unformatted TableMetada.asCQLQuery() appends options.* without spacing
Minor typo
QueryBuilder: function calls should now use fcall

JAVA-100 #fixes
Create host pools asynchronously

JAVA-118 #fixes
prevent table value display when value is null
Merge pull request #101 from mpenet/logging

prevent table value display when value is null
Updated details in README