Fixes #98 - Moved API & MapReduce classes to their own module.
Organized packages in core module.  Created FluoFactory class so users
can create FluoClient or FluoAdmin from API using reflection.  Core now
generates test jar to allow other modules to use utility test classes.
Formatted Maven pom files to use two spaces.  Configuration class was
renamed to Environment.
Merge pull request #120 from mikewalch/fluo-98-pull

Fixes #98 - Moved API & MapReduce classes to their own module.
Closes #113 Adding required Sonatype OSS properties to poms to allow for release
Closes #115 Removing calls to ZooUtil.recursiveDelete() and replacing with Curator.
Closes #126 CuratorUtil.getCurator() was not using timeout param
Merge pull request #125 from cjnolet/fluo-115

Closes #115 Removing calls to ZooUtil.recursiveDelete() and replacing wi...
Closes #122 - Removed Range dependency in Span.  This allowed the
SpanUtil and ByteUtil classes to be moved from API to core module.
Merge pull request #124 from cjnolet/fluo-113

Closes #113 Adding required Sonatype OSS properties to poms to allow for...
Merge pull request #129 from mikewalch/fluo-122

Fixes #122 - Removed Range dependency in Span.
Closes #123 - Made ArrayBytes a private inner class of Bytes.  Moved any
conversion code between Bytes and external data formats to ByteUtil.