a simple benchmark for ArrayQuery class

Use it with forp.php?profile=arrayquery_bench.php
a mongodb reference benchmark

use it with forp.php?profile=mongodb_bench.php
forp profiler UI

the forp-ui slightly modified sample ui loader(to be called with forp.php?profile=FILE_TO_PROFILE)
how to benchmark with forp
Update README.md
sample data for profiling
Rename arrayquery_bench to arrayquery_bench.php
Update README.md
Update README.md
Create USAGE.md
Update README.md
Update README.md
Merge pull request #1 from hubtheflow/master

documentation and profiling tools