Fails on server side rendered pages

[dderr]

var _mobile = /ipad|iphone|ipod|android|blackberry|windows phone|opera mini|silk/i.test(navigator.userAgent);

The line fails on isomorphic page loads when rendering on the server side since there is no browser environment.

at Object. (.../node_modules/react-icheck/lib/EnhancedSwitch.js:33:89)
[1] at Module._compile (module.js:460:26)
[1] at Module._extensions..js (module.js:478:10)
[1] at require.extensions.(anonymous function) (.../node_modules/babel-register/lib/node.js:166:7)
[1] at Object._module3.default._extensions.(anonymous function) [as .js](.../node_modules/webpack-isomorphic-tools/node_modules/require-hacker/babel-transpiled-modules/require hacker.js:250:71)
[1] at Module.load (module.js:355:32)
[1] at Module._load (module.js:310:12)
[1] at Function.module._load (.../node_modules/piping/lib/launcher.js:32:16)
[1] at Module.require (module.js:365:17)
[1] at require (module.js:384:17)

[luqin]

Not support server side now. Welcome to push a PR.

[jooj123]

This is fixed in this PR: #26