Merge pull request twbs#125 from DHS/readme-spelling

Fixed readme spelling mistake, closes twbs#123

README.md

@@ -35,7 +35,7 @@ Releases will be numbered with the follow format:
 And constructed with the following guidelines:
 
 * Breaking backwards compatibility bumps the major
-* New additions without breaking backwards compatibility bumpbs the minor
+* New additions without breaking backwards compatibility bumps the minor
 * Bug fixes and misc changes bump the patch
 
 For more information on SemVer, please visit http://semver.org/.