remove redundant code
fixes warning about erasure
remove `println` from test suites & add some test
add cross-languages test. Note: To run those suite, we need install php-cli. If running in windows -> need change path $dataFile in data.php & change dataFile in Data.scala
Merge pull request #2 from giabao/features/cross-test

Features/cross test
v1.0.2 fix bug with unicode string, add param php64bit when serialize Long value