修改Instrumentation类，支持传递参数

Usage:

-javaagent:[JAR_PARENT_PATH]/instrumentation-util-0.0.1.jar=classname:[P
HOENIX_DEPLOYER_PATH],methodname:[INSTRUMENTATION_SET_METHOD_NAME]
Merge pull request #4 from dianping/master

拉取最新代码
为Instrumentation增加默认值

classname=com.dianping.phoenix.router.hotdeploy.ClassRedefiner
methodname=setInstrumentation
Merge pull request #193 from songtong/master

修改Instrumentation类，支持传递参数