Ignore all .idea files for now
Ignore all .idea files for now

smartpcr/hadoop-arch-book,nvoron23/hadoop-arch-book,nvoron23/hadoop-arch-book,smartpcr/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book,markgrover/MRSessionize,smartpcr/hadoop-arch-book,nvoron23/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book,hadooparchitecturebook/hadoop-arch-book