Update README.markdown

diff --git a/README.markdown b/README.markdown
index bab95b86a2ec8174f1386527f7f5aaaf989b6599..d35ecee5257a8528d5a18e25581c55476f42a04e 100755 (executable)
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@@ -45,7 +45,7 @@ Changelog
 
 Added `moment.version` to get the current version.
 
-Removed `window !== undefined` when checking if module exists to support browserify. #25
+Removed `window !== undefined` when checking if module exists to support browserify. [#25](https://github.com/timrwood/moment/pull/25)
 
 ### 1.0.0