Added building, running and license info the to README
Merge pull request #7 from toomasr/master

Added building, running and license info the to README
Merge pull request #8 from jperedadnr/master

Added return value to sortAndTraverseGrid to count for tiles moved or found per direction
Moved from if/else to ternary. Cleaner code and using instance method reference (Java 8) feature
Check if we have empty cells, but using parallelStream() :-)
Reduced dropshadow radius to prevent crashing on the Raspberry Pi. File bug pending