Example of rtree_client escript

Create with:
    rebar compile escriptize
Copy erlgeom share library:
    cp deps/erlgeom/priv/erlgeom.so apps/rtree_client/lib/escript
Simple Test:
    apps/rtree_client/bin/rtree_client 10.0 10.0
Output:
    Input:10.000000 10.000000 = {'Point',[10.0,10.0]}

TODO: Add Makefile and migrate python rtree client functionality
      to this erlang client.

On branch master