Bump version to 3.4
Bump version to 3.4

tkrishp/Hadoop-BAM,ryan-williams/Hadoop-BAM,fnothaft/Hadoop-BAM,tomwhite/Hadoop-BAM,ryan-williams/Hadoop-BAM,cmnbroad/Hadoop-BAM,fnothaft/Hadoop-BAM,HadoopGenomics/Hadoop-BAM,fnothaft/Hadoop-BAM,HadoopGenomics/Hadoop-BAM,cmnbroad/Hadoop-BAM,HadoopGenomics/Hadoop-BAM