Update release notes

Author: jhudson8

release-notes.md

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+# Release Notes
+
+## Development
+
+[Commits](https://github.com/jhudson8/react-css-builder/compare/v0.1.0...master)
+
+## v0.1.0 - February 4th, 2015
+- add enhanced styleset selectors - b3c5eb8
+You can now use ```a[b c]``` or ```a[b,c]``` to be translated to ```a.b, a.c```
+
+- allow for private namespaces and returned css builders - 4655a81
+If a namespace is not provided when registering the stylesheet, the response from that call will be the only way to access the stylesets
+
+
+[Commits](https://github.com/jhudson8/react-css-builder/compare/1ac3818...v0.1.0)