add test from issue #7
update test
add test
rewrite Rectangle.intersects to fix #7
improve efficiency of search by checking against node mbr first
update README
remove unused import
Update README.md
set default  maxChildren=4 for R*-tree based on benchmarking of recent changes
add more Rectangle unit tests
update README.md
update README
update README
update README
[maven-release-plugin] prepare release 0.4
[maven-release-plugin] prepare for next development iteration
Update README.md
Update README.md
Update README.md
Update README.md