Update README.md

Add release candidate info

Author: Ryan Johnson

README.md

@@ -15,7 +15,7 @@
 
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-**Next major relases v3.0 is coming!! - [details here](https://github.com/ryandrewjohnson/react-localize-redux/issues/67#issue-312731598)**
+🎉 **Release candidate for v3.0 is ready!!** 🎉 **- [Try it now](https://github.com/ryandrewjohnson/react-localize-redux/issues/67#issuecomment-384493024)**
 
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