remove no used fiel
update http send encode for utf8
fix the chinese word send By unicode
fix the tag/alias can't be chinese
update example test
fix the tag value is chinese can't send
fix the problem whith Anp send
fix the problem whith Anp send
1. fix issue - set extras default value empty
1.fix an issue when extra is Null server return error 1003
2.optimize the directory structure
1.remove example unused
a example for JPushClient