closes #158 removed classpath requirement for admin
added trim before empty check
Merge pull request #159 from keith-turner/fluo-158

closes #158 removed classpath requirement for admin
closes #153 many improvements to type layer (test, docs, refinement)
Merge pull request #156 from keith-turner/fluo-153

closes #153 many improvements to type layer (test, docs, refinement)
closes #150 changed Span builder methods names from cf,cq,cv to fam,qual,vis.
Merge pull request #174 from keith-turner/fluo-150

closes #150 changed Span builder methods names from cf,cq,cv to fam,qual...
Closes #8 - Garbage collection iterator now only clears data prior
to oldest active snapshot.  Created TimestampTracker to keep track
of timestamps in Zookeeper.  Modified GC iterator to get oldest
active timestamp from Zookeeper.  Snapshots and transactions now
have resources that need to be closed.