iOS README

1.Requirements
    brew install usbmuxd
    brew install libimobiledevice
    brew install ideviceinstaller
    brew install carthage
    brew install socat
    brew install graphicsmagick zeromq protobuf yasm pkg-config

2.config WebDriverAgent,clone from https://github.com/mrx1203/WebDriverAgent.git，remember the save path,
this path will pass to the ios-provider with --wda-pat


3.start ios-provider，because ios-provider used xcodebuild terminal tools on mac，and docker have not provide this tools ，
  so you must deploy the ios-provider with source。the steps：
（1）git clone https://github.com/mrx1203/stf.git
（2）cd to the stf path,then run the commond:npm install
（3）start ios-provider
  stf ios-provider --name "mac081" --connect-sub tcp://x.x.x.x:7114 \
    --connect-push tcp://x.x.x.x:7116 --storage-url http://x.x.x.x \
    --public-ip y.y.y.y --heartbeat-interval 20000 \
    --wda-path wda_save_path/WebDriverAgent/ --wda-port 8100