（一）安装react-native-fs库时，执行react-native link react-native-fs命令，出现错误：
ERR! Something went wrong while linking.
Error: Expected "/*" or ";" but "\"" found.
Please file an issue here: https://github.com/facebook/react-native/issues
link失败，导致Xcode打不开。
解决办法：
参考"react-native link" error，打开xxx.xcodeproj下的project.pbxproj文件，找到HEADER_SEARCH_PATHS，将
HEADER_SEARCH_PATHS = "$(SRCROOT)/../../../react-native/React/**","$(SRCROOT)/../node_modules/react-native-device-info/RNDeviceInfo";
改为
HEADER_SEARCH_PATHS = (
"$(SRCROOT)/../../../react-native/React/**,
"$(SRCROOT)/../node_modules/react-native-device-info/RNDeviceInfo",
);
之后执行react-native link react-native-fs命令，link成功！
QQ20170817-135544@2x.png
