Merge pull request #24 from anatmaor/master

Added datasource calling from MJstack
fix grouping and merging
add flat profiler support
Merge pull request #25 from anatmaor/master

add StreamPlugin and PathPlugin
fixed path and stdin plugins
fix data sources
jmx and jstack plugin support
remove irrelevant test
rename plugins
Added attribute concept
fix synopsis
reformat pom.xml
some fixes
fix jmx and mjprof.bat
improve interface
first commit of visualvm ds
update readme
added cpu support
change plugin infrastructure to support custom param names and optional params
fixed bug in visitor the visitor may change the keys