README.md: Update the config example
README.md: Update the config example

* version in the config example is advanced to 0.1.0
* rootfsPropagation in config.json is removed
    (The same one is already in runtime.json)
* rlimit time is changed from magic number to name(string)
* add pids cgroup
* add cgroup path

After this change applied, the example config in this README.md
is consistent with the result of `runc spec`.

Signed-off-by: Lai Jiangshan <b337eedf453972390e4695e362aeea2634ef4e0c@gmail.com>

rajasec/runc,opencontainers/runc,dqminh/runc,dqminh/runc,kimh/runc,HardikDR/runc,ZJU-SEL/runc,inatatsu/runc,rajasec/runc,coolljt0725/runc,opencontainers/runc,rajasec/runc,marcosnils/runc,xiaochenshen/runc,WeiZhang555/runc,adrianreber/runc,InformatiQ/runc,docker/runc,coolljt0725/runc,YujiOshima/runc,sallyom/runc,sunyuan3/runc,docker/runc,docker/runc,runcom/runc,xiaochenshen/runc,estesp/runc,rhatdan/runc,chenchun/runc,InformatiQ/runc,laijs/runc,adrianreber/runc,cloudfoundry-incubator/runc,estesp/runc,chenchun/runc,chenchun/runc,cloudfoundry-incubator/runc,abduld/runc,wking/runc,sunyuan3/runc,kolyshkin/runc,runcom/runc,estesp/runc,keloyang/runc,kolyshkin/runc,mheon/runc,WeiZhang555/runc,fabiokung/runc,jhowardmsft/runc,mikebrow/runc,HardikDR/runc,laijs/runc,ZJU-SEL/runc,mYmNeo/runc,WeiZhang555/runc,liuwharton/runc,kolyshkin/runc,stefanberger/runc,abduld/runc,wangkirin/runc,cyphar/runc,kimh/runc,cyphar/runc,coolljt0725/runc,marcosnils/runc,keloyang/runc,opencontainers/runc,liuwharton/runc,maxamillion/runc,justincormack/runc,inatatsu/runc,mYmNeo/runc,hqhq/runc,xiaochenshen/runc,maxamillion/runc,wangkirin/runc,dqminh/runc,cloudfoundry-incubator/runc,crosbymichael/runc,rhatdan/runc,mheon/runc,avagin/runc,nkwilson/runc,rhatdan/runc,shishir-a412ed/runc,sunyuan3/runc,mikebrow/runc,shishir-a412ed/runc,keloyang/runc,adrianreber/runc,wking/runc,nkwilson/runc,liuwharton/runc,ZJU-SEL/runc,laijs/runc,albertoleal/runc,marcosnils/runc,abduld/runc,maxamillion/runc,fabiokung/runc,vbatts/runc,vbatts/runc,avagin/runc,justincormack/runc,shishir-a412ed/runc,dqminh/runc,stefanberger/runc,justincormack/runc,mikebrow/runc,YujiOshima/runc,hqhq/runc,crosbymichael/runc,InformatiQ/runc,avagin/runc,sallyom/runc,sallyom/runc,hqhq/runc,opencontainers/runc,wangkirin/runc,YujiOshima/runc,wking/runc,albertoleal/runc,HardikDR/runc,stefanberger/runc,kimh/runc,kolyshkin/runc,jhowardmsft/runc,crosbymichael/runc,mheon/runc,rhatdan/runc,fabiokung/runc,mYmNeo/runc,inatatsu/runc,vbatts/runc,cyphar/runc,albertoleal/runc,jhowardmsft/runc,nkwilson/runc,runcom/runc