Update version_checker.rb (#1039)

Author: justin808

lib/react_on_rails/version_checker.rb

@@ -82,9 +82,7 @@ def relative_path?
       def major_minor_patch
         return if relative_path?
         match = raw.match(MAJOR_MINOR_PATCH_VERSION_REGEX)
-        unless match
-          raise "Cannot parse version number '#{raw}' (wildcard versions are not supported)"
-        end
+        raise "Cannot parse version number '#{raw}' (wildcard versions are not supported)" unless match
         [match[1], match[2], match[3]]
       end