Removing commons io dependency
Still removing the dep on commons-io
Still removing the dep on commons-io
Added some doc and placed license notification at the top of the files rather than after the package name
Added to NOTICE that we use code from ASF
Some more methods removed from the io package
Changed javadoc around a bit to adhere to java8 requirements
Hiding utility class constructor
Merge pull request #55 from zeroturnaround/commons-io-detach

Remove zt-zip dependency on commons-io