增加zsh环境变量所用脚步，增加撤销环境变量脚本
fix settings.conf, clean up code style
add new command to context; add iterator
add jsonrpc support for zinc
抽取zinc_agent的Start方法为独立方法，避免因为Start参数影响rpc调用
change redis pack format from json to array
add Hgetall_arr method, provide another way to get redis data
change ZincAgent response format;change jsonrpc format

ZincAgent response format change into redis raw format.
custom jsonrpc: add length header
Add database config to ZincAgent
配置文件改为json方式
Merge pull request #1 from spin6lock/change_config_to_json

Change config to json