Fixed formatting (using Tabs consistently)
implemented issue #3: please add Scala's mkString function
removed redundant code parts
added some tests for mkString
Adding Travis CI integration
Adding Travis CI build results link
implemented LazySeqStream.onClose and LazySeqStream.close
used tabs for indentation
added LazySeq.sortedBy(Function<E, ? extends Comparable> attribute)
added a simple Tuple class with a static import function "t" used as shortcut for creating tuples
added LazySeq.toMap and different LazySeq.groupBy functions and some shortcuts for the creation of Java Maps, Lists and Sets
Merge remote-tracking branch 'upstream/master'