Merge pull request #34 from aeternity/chore/update-readme

Update readme version to 0.5.1

Author: mradkov

README.md

@@ -11,7 +11,7 @@ You can get it as npm package or from the unpkg.com.
 ### With unpkg.com and `<script>` tag
 Add this to your website's HTML:
 ```html
-<script src="https://unpkg.com/@aeternity/superhero-utils@0.5.0/dist/index.js"></script>
+<script src="https://unpkg.com/@aeternity/superhero-utils@0.5.1/dist/index.js"></script>
 ```
 This will define `superheroUtils` in the global scope.