Merge pull request #34

ADDED: Helper function 'empty'

.gitignore

@@ -2,5 +2,4 @@
 /node_modules/
 /src/css/fonts/FontAwesome5Pro/
 /dist/
-/release/
-/build/
+/release/

README.md

@@ -73,7 +73,7 @@ To contribute on the **_SGNUIKit Core_**, send an email on [contribute@sgnuikit.
 
 If you are selected, you'll receive an email from the core development team with all the information required to move forward.
 
-Or if you have a new feature which can be added in the `SGNUIKit Core`, just email to [rfc@sgnuikit.repository.sgnetworks.eu.org](mailto:rfc@sgnuikit.repository.sgnetworks.eu.org) with your proposal.
+Or if you have a new feature which can be added in the `SGNUIKit Core`, just email to [rfc@sgnuikit.cdn.sgnetworks.eu.org](mailto:rfc@sgnuikit.cdn.sgnetworks.eu.org) with your proposal.
 
 Or if you found a bug or error which need to be fixed create an issue at [issues](https://github.com/SGNetworksIndia/SGNUIKit/issues) or if you think you can fix the issue, report the bug to
 [bug@sgnuikit.cdn.sgnetworks.eu.org](mailto:bug@sgnuikit.cdn.sgnetworks.eu.org) explaining the issue you found.