fix incorrect tuple key name in the javadoc

key was documented as "entry" but in reality it is "t"
Merge pull request #330 from hrldcpr/master

fix incorrect tuple key name in the VectorWritableConverter javadoc
Update hadoop-lzo build in Travic-CI config
Merge pull request #332 from rangadi/fix_hadoop_lzo_in_in_travic_ci

Update hadoop-lzo build in Travic-CI config